Atomic Structure Unit Test

Front

Atoms of elements in the same period of the periodic table share the same: number of energy levels, number of valence electrons, atomic numbers, atomic masses

Back

number of energy levels

Front

What subatomic particles are found in the nucleus of an atom?

Back

protons and neutrons

Front

How many electrons will an electrically neutral atom of carbon have if its nucleus has 6 protons and 8 neutrons?

Back

6

Front

An element with 5 protons, 6 neutrons, and 8 electrons has an atomic number of

Back

5

Front

An element with 6 protons, 8 neutrons, and 6 electrons has a mass number of

Back

14

Front

As an electron moves further from the nucleus, its ________ increases.

Back

energy

Front

Atoms with the same numbers of protons but with different numbers of neutrons are called:

Back

isotopes

Front

The total number of valence electrons of a chlorine atom is:

Back

7

Front

Which particles determine the atomic number of an element?

Back

Protons only

Front

Two different isotopes of an element have different ________.

Back

numbers of neutrons