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Chapter 4: Q. 4.45 (page 120)

Electron can move to higher energy levels when they_____(emit/absorb) energy.

Short Answer

Expert verified

Electron move to higher energy levels by absorbing energy.

Step by step solution

01

Given information.

We have been given that,

Electron, energy levels

When electrons go to higher energy levels, we must declare whether they emit or absorb energy.

02

Simplify.

  • Electron with lower energy absorb specific amount of energy when they move to higher energy levels.
  • By Bohr's model, electrons tries to revolve around shells and each energy level has has specific amount of energy. Energy keeps increasing from lower shells to higher shells. The electrons in lower shells has low energy so, it must absorb energy energy to move into higher shell.
  • Electrons absorb energy and excite, moving from a lower to a higher energy level.

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Most popular questions from this chapter

Give the symbol of the element described by each of the following:
a. the alkaline earth metal in Period 2
b. Group15 , Period 3
c. the noble gas in Period 4
d. the halogen in Period 5
e. Group 4A14 , Period 4

Write the atomic symbol for each of the following: (4.4,4.5)

a. an aluminum atom with 14neutrons.

b. an atom with atomic number 26and32neutrons.

c. a strontium atom with 50neutrons

d. an atom with a mass number of72and atomic number33

Write the names and symbols for the elements with the following atomic numbers:

a. 1 b. 11 c. 19 d.82

e. 35 f. 47 g. 15 h. 2

Two isotopes of rubidium occur naturally, R3785bandR3787b. Which isotope of rubidium is more abundant?

For each representation of a nucleus through, write the atomic symbol and identify which are isotopes. 4.4,4.5
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