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Eddi Din [679]
3 years ago
7

Which electrons are the valence electrons of the atom? Helpppppppp

Chemistry
1 answer:
Arlecino [84]3 years ago
4 0

Explanation:

electrons in the highest energy orbitals which are able to contribute to Bonding are valence electrons,....... please mark me brainiest

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Convert 4.8 moles of calcium carbonate to<br> particles.
Iteru [2.4K]

Answer:

<h2>2.89 × 10²⁴ particles</h2>

Explanation:

The number of particles can be found by using the formula

N = n × L

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is 6.02 × 10²³ entities

We have

N = 4.8 × 6.02 × 10²³

We have the final answer as

<h3>2.89 × 10²⁴ particles</h3>

Hope this helps you

8 0
3 years ago
How is the number of valence electrons related to the ionization energy of an element?
Elina [12.6K]
A) Low ionization energy correlates to elements with fewer valence electrons.

Ionization energy is the energy required to separate valence electrons from their atom. The more valence electrons there are, the higher the ionization energy.

Hope this helps!
8 0
3 years ago
The formation of protons over neutrons (thus producing about a 7:1 ratio) was favored in the early universe because:____.
tatiyna

Because it requires more energy to create a neutron from a proton than it does to create a proton from a neutron, protons were formed more frequently than neutrons in the early universe. The correct answer is option b.

To find the answer, we need to know more about the early universe.

<h3>How the formation of proton over neutrons was favored in the early universe?</h3>
  • A neutron is produced with greater energy than a proton.
  • However, later on, some of the protons were changed into neutrons.
  • Contrary to some claims, the proton is a stable particle that never decays, but the neutron is unstable outside of the nucleus and decays with a half life of around 10.5 minutes.
  • However, very few would have had time to decay on the timeline you mention in your question.
  • Every matter particle should have been accompanied by an antimatter particle, and every proton, neutron, and electron, by an anti-neutron and a positron, respectively.
  • Where did all the antimatter go is the great mystery. There have been a few attempts to explain this, but they have failed.

Thus, we can conclude that, the correct answer is option b.

Learn more about the early universe here:

brainly.com/question/28130096

#SPJ1

7 0
1 year ago
The decomposition of nitrogen dioxide is described by the following chemical equation:
kow [346]

Answer:

The balanced chemical equation will be "NO_{2}+O\rightarrow NO+O_{2}".

Explanation:

The given equation is:

2NO_{2}\rightarrow 2NO+O_{2}

<u>Step 1:</u>

<u></u>2NO_{2}\rightarrow NO+O...(equation 1)

<u>Step 2:</u>

<u></u>NO_{2}+O\rightarrow NO+O_{2}...(equation 2)

On adding "equation 1" and "equation 2", we get

⇒  NO_{2}+NO_{2}+O\rightarrow NO+O+NO+O_{2}

⇒  2NO_{2}\rightarrow 2NO+O_{2}

The second step:

⇒  NO_{2}+O\rightarrow NO+O_{2}

3 0
3 years ago
What are rotation and revolution and how do they affect Earth?
Ivenika [448]

Answer:

Rotation refers to an object's spinning motion about its own axis. "Revolution" refers the object's orbital motion around another object. For example, Earth rotates on its own axis, producing the 24-hour day. Earth revolves about the Sun, producing the 365-day year.

7 0
2 years ago
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