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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

The most abundant isotope of lead is 20882Pb.(4.4,4.5)

a. How many protons, neutrons, and electrons are in 20882Pb?

b. What is the atomic symbol of another isotope of lead with 132neutrons?

c. What is the atomic symbol and name of an atom with the same mass number as in part b and 131neutrons?

For the following atoms, determine the number of protons, neutrons, and electrons:(4.4,4.5)

a.H80202g

b.I53127

c.B3575r

d.C55133s

e.P78195t

Identify each of the following elements as a metal, a nonmetal, or a metalloid:
a. Located in Group 2A2
b. A good conductor of electricity
c. Chlorine
d. Arsenic
e. An element that is not shiny
f. Oxygen
g. Nitrogen
h. Tin

Strontium has four naturally occurring isotopes, with mass numbers 84,86,87,and88

a. Write the atomic symbol for each of these atoms.

b. How are these isotopes alike?

c. How are they different?

d. Why is the atomic mass of strontium listed on the periodic table not a whole number

e. Which isotope is the most abundant in a sample of strontium

Is each of the following statements true or false?

a. A proton is attracted to an electron.

b. A neutron has twice the mass of a proton.

c. Neutrons repel each other.

d. Electrons and neutrons have opposite charges.
See all solutions

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