Honors Chemistry Unit 2 Practice Test

Front

What makes an atom electrically neutral?

Back

An atom is electrically neutral when the number of protons equals the number of electrons.

Front

What is the electron configuration of Krypton?

Back

1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶

Front

How many neutrons are in a lithium atom with an atomic mass of 7?

Back

5 neutrons.

Front

How many valence electrons does Chlorine have?

Back

Chlorine has 7 valence electrons.

Front

What type of orbitals are represented by the notation d?

Back

d orbitals.

Front

What is the atomic number of an element?

Back

The atomic number is the number of protons in the nucleus of an atom.

Front

How do you determine the number of neutrons in an atom?

Back

Subtract the atomic number from the atomic mass.

Front

What is the significance of valence electrons in chemical bonding?

Back

Valence electrons determine how an atom can bond with other atoms.

Front

What is the maximum number of electrons that can occupy a single orbital?

Back

A single orbital can hold a maximum of 2 electrons.

Front

What is the shape of s orbitals?

Back

s orbitals are spherical in shape.