ATOMIC STRUCTURE QUIZ

The number "18" in the periodic table square shows:

• atomic mass.

• atomic number.

• elemental name.

• elemental symbol.

The letters "Ar" in the periodic table square shows:

• atomic number.

• atomic mass.

• elemental symbol.

• elemental name.

What is the atomic mass of an atom with 16 protons, 16 electrons, and 18 neutrons?

• 34 AMU

• 18 AMU

• 16 AMU

• 2 AMU

How many valence electrons are in the atom pictured?

• 4

• 2

• 8

• 0

How many electrons would be in the closest shell of this atom?

• 2

• 8

• 10

• 4

How many electrons would be in the second shell of this atom?

• 2

• 8

• 10

• 6

What is the mass number of this atom?

• 1

• 3

• 4

• 7

An atom has 10 protons, 15 neutrons and 10 electrons what is its mass number.

• 20

• 10

• 5

• 25

Which letter represents a proton?

• A

• B

• C

• D

Which letter represents an electron?

• A

• B

• C

• D