what are the 4 quantum numbers for the last electron in promethium 

Answers

Answer 1

Answer:

Promethium atoms have 61 electrons and the electronic shell structure is [2, 8, 18, 23, 8, 2] with Atomic Term Symbol (Quantum Numbers) 6H5/2.


Related Questions

aspartame is the methyl ester of a dipeptide made of phenylalanine and aspartic acid. what are the expected products of the hydrolysis of aspartame?

Answers

Aspartame is an artificial sweetener that is 200 times sweeter than sucrose. The expected products from the hydrolysis of aspartame are;

MethanolAmino acids (Phenylanaline)Aspartate

Aspartame is a methyl ester that is gotten from aspartic acid and phenylalanine dipeptide. Aspartame is used by many food companies as a replacement for sugar. It is deemed suitable for consumption.

The hydrolysis of aspartame takes place in the small intestine. There, it is immediately transformed to methanol, phenylalanine, and aspartate.

Further products that are obtained after hydrolysis are; formaldehyde and formic acid.

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What can you conclude about the symmetry of the C3H5 ion as it actually exists, as regards the bond lengths and the distribution of the positive charge

Answers

In the allyl cation, all the bond lengths are equal and the positive charge is delocalized over all the three carbon atoms.

The allyl cation has the formula C2H5+. In the allyl cation, the positive charge is delocalized over the three carbon atoms as shown in the image attached. Hence, relevant resonance structures can be proposed for the allyl cation.

The bond lengths in the allyl cation are intermediate between the bond lengths of double bonds and single bonds. All the bond lengths are equal.

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2. An atom has 24 protons and 28 neutrons.
What is the atomic number

Answers

Answer:

The atomic number is 24.

Explanation:

The atomic number is the total amount of protons that an atom has. How it differs between the atomic mass is that the atomic mass is the total sum of protons and neutron. If an atom is neutral (Non-ionized), then the amount of electrons is equal to the amount of protons.

This atom has:

An atomic number of 24Has 24 electronsAn atomic mass of 52This atom is Chromium-52

How many Atoms are in a Carbon Molecule??

Answers

Answer:

6.023×10^23

Explanation:

as 1 atom of carbon molecules is equal to the Avogadro's number.i.e. 6.023×10^23

How should an amoeba be classified

Answers

Explanation:

Amoebas are identified by their ability to form temporary cytoplasmic extensions called pseudopodia, or false feet, by means of which they move about. This type of movement, called amoeboid movement, is considered to be the most primitive form of animal locomotion.

Poisons are more serious and harmful than toxins if ingested because the _____ is lower. Small amounts of poison can be extremely dangerous.

Answers

Answer:

The death is lower

Explanation:

im gonna get a warning watch

what is the cathode and anode of k2so4​

Answers

Correct option is

O 2


Here,
Electrolysis of H
2

O takes place:

2H
2

O→O
2

+4H

+4e

A sacrificial anode can be used to protect a metal like iron from corrosion. In order for this to work, the anode must be _____ than the metal that it is protecting.

Answers

Answer:

more active

Explanation:

100points and BRAINEST awnser PLEASEEEE HELP


I need help with 2 and three

Answers

Answer:

2 H2O → 2 H2 + O. Decomposition of water.

There are 4 hydrogen atoms on the left side of the equation (CH4)

2 on the right side (H2O).

Two oxygen atoms

Explanation:

In a chemical reaction, mass is conserved. This means that

a.
The mass of the products is always twice the mass of the reactants.


b.
The mass of the products stays the same during a chemical reaction


c.
The mass of the reactants stays the same during a chemical reaction


d.
The type and number of atoms in the reactants equals the type and number of atoms in the products

Answers

d. the mass and number of atoms and the elements will always and must be equal on both sides of the equation, mass can not be destroyed, only conserved

how to find valence electrons from electron configuration

Answers

Answer:

group 8 noble gases

Explanation:

they are inert gases so have Valence electron configuration

Would the answer be B?

Answers

Answer:

yes the answer would be b

PLEASE HELP ASAP!!
Which statement best describes hydrogen bonding?


The electronegative hydrogen atom in one molecule and an electronegative atom in another molecule experience attraction.


The electronegative hydrogen atom in one molecule and an electropositive atom in another molecule experience attraction.

The electropositive hydrogen atom in one molecule and an electronegative atom in another molecule experience attraction.


The electropositive hydrogen atom in one molecule and an electropositive atom in another molecule experience attraction.

Answers

Regarding hydrogen bonding, it is true that the electropositive hydrogen atom in one molecule and an electronegative atom in another molecule experience attraction.

Hydrogen bondings are intermolecular forces among molecules that contain:

A hydrogen atom, which has a positive charge density.An atom that is way more electronegative than hydrogen, such as N, O or F, which has a negative charge density.

The hydrogen bonding is formed between H (positive pole) of 1 molecule and the other atom (negative pole) of the other molecule.

Which statement best describes hydrogen bonding?

The electronegative hydrogen atom in one molecule and an electronegative atom in another molecule experience attraction. NO. Hydrogen is electropositive.The electronegative hydrogen atom in one molecule and an electropositive atom in another molecule experience attraction. NO. Hydrogen is electropositive and the other atom is electronegative.The electropositive hydrogen atom in one molecule and an electronegative atom in another molecule experience attraction. YES.The electropositive hydrogen atom in one molecule and an electropositive atom in another molecule experience attraction. NO. The other atom is electronegative.

Regarding hydrogen bonding, it is true that the electropositive hydrogen atom in one molecule and an electronegative atom in another molecule experience attraction.

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Answer:

1.Heat energy is added to the substance, weakening the electrical attraction between molecules.

2.Both the melting point and boiling point are lower.

3. The electropositive hydrogen atom in one molecule and an electronegative atom in another molecule experience attraction.

4. dipole

5.Water and ethanol have different molecular structures.

You're Welcome :)

Porphyry copper deposits that are weathered are more valuable than nonweathered deposits because ______.

Answers

Porphyry copper deposits describes copper ore bodies which are formed from large copper ore bodies due to the high temperature exerted by magmatic fluid originating below the ore deposit.

Weathered portion of the Porphyry copper resulting from the reaction of hydrothermal fluid are washed to greater depth level below the unweathered portion of the deposit.

Copper deposits at greater depth are usually more concentrated with copper than those above.

Hence, reason why weathered porphyry are more valuable than unweathered porphyry.

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elements in the same period share the same number of:

Answers

Answer:       electron on the shell  of the atom

Explanation:  that what I trying to remember

True or False?

A speed-versus-time graph for a car's motion is a horizontal line at a speed of 12 m/s. The car's acceleration during this time is 12 m/s2

Answers

The answer is true.

1. What two factors change the speed of the atoms/molecules?

Answers

Answer:

With an increase in temperature, the particles gain kinetic energy and move faster. The actual average speed of the particles depends on their mass as well as the temperature – heavier particles move more slowly than lighter ones at the same temperature.

Explanation:

Hope it helps.

what is the maximum number of electrons that can occupy the 3 shell of an atom?

Answers

The first shell can hold up to two electrons, the second shell can hold up to eight (2 + 6) electrons, the third shell can hold up to 18 (2 + 6 + 10)

identify whether each change represents an oxidation or reduction. then determine how many electrons were involved and which side of the reaction they should appear on in the half-reaction.

Answers

Al ⇒ Al³⁺ is an oxidation and 3 electrons on the right side are needed.Cu²⁺ ⇒ Cu is a reduction and 2 electrons on the left side are needed.2 F⁻ ⇒ F₂ is an oxidation and 2 electrons on the right side are needed.

In a redox reaction, we can identify 2 kinds of half-reactions:

Oxidation: the oxidation number increases.Reduction: the oxidation number decreases.

Let's consider the following half-reactions.

Al ⇒ Al³⁺

This is an oxidation because the oxidation number increases from 0 to 3+. To balance it, we need 3 electrons on the right side.

Cu²⁺ ⇒ Cu

This is a reduction because the oxidation number decreases from 2+ to 0. To balance it, we need 2 electrons on the right side.

2 F⁻ ⇒ F₂

This is an oxidation because the oxidation number increases from -1 to 0. To balance it, we need 2 electrons on the right side.

Al ⇒ Al³⁺ is an oxidation and 3 electrons on the right side are needed.Cu²⁺ ⇒ Cu is a reduction and 2 electrons on the left side are needed.2 F⁻ ⇒ F₂ is an oxidation and 2 electrons on the right side are needed.

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Identify whether each change represents an oxidation or reduction. then determine how many electrons were involved and which side of the reaction they should appear on in the half-reaction.

Al ⇒ Al³⁺

Cu²⁺ ⇒ Cu

2 F⁻ ⇒ F₂

What animal have jaws?

Answers

Answer:

all of em

Explanation:

they got mouths right

Determine the heat required to raise the temperature of 9.4 mole of water from 75.0oC to 125oC at atmospheric pressure. Note that water transitions from the liquid to the vapor state. Express your answers in Joules.

Answers

The heat capacity required to raise the temperature of  9.4 mole of water from 75.0oC to 125oC at atmospheric pressure is 35429 J.

The following information is available from the question;

Number of moles =  9.4 mole

Initial temperature =  75.0oC

Final temperature = 125oC

Molar heat capacity = 75.38 J/mol °C

Now;

H = ncθ

m = Number of moles of water

c = Molar heat capacity of water

θ = Temperature rise

Substituting values;

H = 9.4 mole × 75.38 J/mol °C × ( 125oC - 75.0oC)

H = 35429 J

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nuclear reactions can be written out in equation form with information about the nuclei that are produced. in one to two sentences, explain how you would identify the reaction as fusion, and give two different criteria.

Answers

Nuclear fusion involves the combination of two light nuclei to form a heavier nucleus with emission of energy.

A nuclear reaction equation is a representation of the change that takes place as one nucleus is converted to another. A nuclear transformation could be any of the following;

Nuclear fissionNuclear fusionTransmutation

We can know that a nuclear fusion is taking place when two nuclei come together to form a larger nucleus and emit energy. I would identify a nuclear fusion when;

Two light atom combine to give a larger nucleusTremendous energy is produced

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one mole of titanium contains how many atoms

Answers

6.022 x 10 23 titanium atoms

In 47.88 grams of titanium, there is one mole, or 6.022 x 1023 titanium atoms.

Hope this helps :)

A molecule contains 16 atoms and undergoes a chemical change. How does the chemical change affect the roral number of aroms of each

element?

A.

It changes to zero.

B.

It decreases.

C.

It remains the same.

D.

It increases

Answers

Answer:

When a molecule contains 16 atoms and undergoes a chemical change it changes to zero

Explain how the absorbtion of energy affects the speed of the particles in a substance

Answers

When heat is added to the substance it gains thermal energy therefore causing the particles to move faster when the temperature rises. When a substance is cooled it looses thermal energy making the particles move slower.

What molecules have 5 carbon atoms and 12 hydrogen atoms

Answers

ANSWER

THE PENTANES

EXPLANATION

he word for5 in Greek is PENT like the 5 sided and 5 angled building in Wachington the PENTagon.

SO C5H12 IS PENTAND BECAUSE IT HAS NO DOUBLE BONDAS IT IS AN ALKANE

SO SO C5H12 IS PENT-ANE    PENTANE AND THERE ARE MULTIPLE FORMS OF IT

Determine the amount of heat energy in joules required to raise the temperature of 7.40g of water from 29.0OC to 46.0 OC Specific heat of water is: 4.184 J/gOC

Answers

The amount of heat energy in joules required to raise the temperature of 7.40g of water is 526.35 Joules

The amount of energy is expressed according to the formula expressed as:

[tex]E = mc\triangle \theta[/tex]

m is the mass of water = 7.40grams

c is the specific heat of water =  4.184 J/g⁰C

[tex]\triangle \theta = 46 - 29\\ \triangle \theta = 17^0[/tex]

Substitute the given parameters into the formula:

[tex]E = 7.4 \times 17 \times 4.184\\E=526.3472Joules[/tex]

Hence the amount of heat energy in joules required to raise the temperature of 7.40g of water is 526.35 Joules

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PLS HELP ASAP I WILL GIVE BRAINLIEST FOR THE ANSWER THAT IS RIGHT!Based on the diagram below, in what period is the atom located on the periodic table? *a. period 4b. period 2c. period 6d. period 1

Answers

Answer:

6

Explanation:

im guessing because there is no diagram

Write the nuclear decay equation for the alpha particle decay of Pu-243

Answers

Answer:

Explanation:

The reaction can be represented by this nuclear equation: 23892U → 23490Th + 42He + Energy.

Please help! I need the answers! you’ll get 25 points!!

Answers

you subtract and then you divide if that doesn’t work subtract

Answer:

183918551670's1665

....

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