Atomic Structure

The number 16 for the atomic element sulfur is the

• ionic number

• isotope

• atomic mass

• atomic number

How many protons does sulfur have?

• 32

• 16

• 8

• 12

How many electrons does sulfur have

• 16

• 32

• 8

• 12

The center of an atom is called the ________________.

• electron cloud

• nucleus

• proton

• electron

Found orbiting outside the nucleus, this subatomic particle has a negative charge.

• Neutron

• Proton

• Electron

• Isotope

Found in the nucleus of an atom. This particle has a positive charge.

• Neutron

• Proton

• Electron

• Decepticon

How many protons does indium have?

• 49

• 66

• 114

• 115

What is the atomic mass of barium

• 56

• 82

• 137

• 138

How many neutrons does platinum have?

• 78

• 117

• 195

• 196

What is the atomic number?

• the number of protons in the nucleus

• the number of protons and neutrons in the nucleus

• the number of neutrons in the nucleus

• the number of protons in the energy levels