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777dan777 [17]
4 years ago
14

When an electron moves from a higher energy level in an atom to a lower energy level, a. a redshifted spectrum is emitted. b. a

photon is absorbed. c. a photon is emitted. d. a continuous spectrum is emitted.
Chemistry
1 answer:
mario62 [17]4 years ago
7 0

Answer:

C

Explanation:

The question asks to know what happens when an electron moves from a higher energy level to a lower energy level.

Firstly, it is important to note that when an electron moves from a lower energy level to a higher energy level, energy is absorbed by the atom. Conversely, when an electron moves from a region of higher energy to a region of lower energy, energy is released by the atom.

Thus we can say that the movement of an electron from a region of higher energy to a region of lower energy can result in the emission of a photon of light as energy is released by the atom

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What is the correct electron configuration for copper?
kakasveta [241]

Answer:

[Ar] 3d10 4s1

Explanation:

The correct electronic configuration of copper is [Ar] 3d10 4s1

Copper has atomic number 29 and due to the stability of half filled or fully filled orbitals or shells, the electrons from the 4s jumps to the 3d and makes the 3d shell contain 10 electrons.

This is what I mean:

Cu = Ar 4s2 3d10 is the expected configuration of copper when we follow the principle of filling the various orbitals that is the s, p, d, f orbitals.

But because we write 3d before writing 4s, we have Ar 3d10 4s2. Instead of this configuration becoming the correct one, an electron from the 4s orbital jumps to the 3d orbital to complete the orbital giving the electrons in the 3d orbital 10.

So therefore the correct configuration is Ar 3d10 4s1

4 0
3 years ago
Copper has two isotopes. Copper-63, which has an atomic mass of of 62.93 u and copper-65, which has an atomic mass of 64.93 u. I
Svetach [21]

Answer:

for more details are in the pic

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3 years ago
Explica brevemente cuidado del aparato digestivo ​
kirill115 [55]

Answer:

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Explanation:

6 0
3 years ago
How do you know sodium is highly reactive?
Stells [14]
<span>Na (sodium) is highly electropositive. Its has 1 electron in its outermost orbit which is transferred to an electronegative atom to form an ionic bond.

It only needs to get rid of one valence electron to take part in a reaction. That's how it's highly reactive.</span>
4 0
4 years ago
PLEASE ANSWERRRRRR
Kay [80]

Electromagnetic wave travels faster through air than metal.

Option A

<u>Explanation:</u>

There are different kinds of wave energy. The most significant are electromagnetic and mechanical waves. The mechanical waves propagate through the medium by transfer of energy by vibrating of particles in medium.

So, the more number of particles present in the medium, the more fast the mechanical wave can propagate. So the mechanical waves travel faster in metals consisting of more number of free charge carriers. But electromagnetic waves does not need any of the medium to propagate. So it can travel faster in air than in metals.

7 0
4 years ago
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