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Chapter 4: Q. 4.46 (page 120)

Electron drop to lower energy levels when they____(emit/absorb) energy.

Short Answer

Expert verified

Electron drop to lower energy levels by emitting energy.

Step by step solution

01

Given information.

We have been given that,

Electron, energy levels from higher to lower.

We need to state whether electron emit or absorb energy when they drop to lower energy levels.

02

Simplify

Electron emit energy when they drop to lower energy levels.

Electron emit energy to lower its kinetic energy and gain stability. Electrons in higher energy levels don't stay for long ,they will eventually fall back to their original energy level (ground state) where they can remain stable.

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Most popular questions from this chapter

Consider the following atoms in which X represents the chemical symbol of the element: (4.4,4.5)

X816,X916,X1018,X817,X818

a. What atoms have the same number of protons?

b. Which atoms are isotopes? Of what element?

c. Which atoms have the same mass number?

d. What atoms have the same number of neutrons?

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

Place the following in order of decreasing metallic character: Br, Ge, Ca, Ga.

According to Dalton's atomic theory, which of the following are true or false? If false, correct the statement to make it true. (4.3)

a. Atoms of an element are identical to atoms of other elements.

b. Every element is made of atoms.

c. Atoms of different elements combine to form compounds.

d. In a chemical reaction, some atoms disappear and new atoms appear.

Why is the ionization energy of Ca higher than K, but lower than that of Mg? (4.7)
See all solutions

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