Atomic Mass and Number

What period is Nitrogen in on the Periodic Table?

• 7

• 15

• 5A

• 2

Tags

NGSS.MS-PS1-1

How many electrons will Nitrogen gain to fill its outer shell?

• 2

• 3

• 5

• 8

Tags

NGSS.MS-PS1-1

What is the mass number of this atom?

• 1

• 3

• 4

• 7

Tags

NGSS.MS-PS1-1

How many protons are in a sodium atom, Na? (tap to enlarge the periodic table)

• Sodium has 1 proton.

• Sodium has 3 protons.

• Sodium has 11 protons

Tags

NGSS.MS-PS1-1

What is the mass number defined as?

• the number of protons

• the number of protons and neutrons

• the number of neutrons

• the number of protons and electrons

What is the atomic number of this atom?

• 1

• 3

• 4

• 7

Tags

NGSS.MS-PS1-1

How many electrons are in an atom with an atomic number of 50?

• 5

• 8

• 50

• 2

The fluorine atom has an atomic number of

• 19

• 9

Tags

NGSS.MS-PS1-1

What is the atomic number?

• the number of protons

• the number of protons and neutrons

• the number of neutrons

• the number of electrons

ALL atoms of the same element have:

• same number of proton

• same number of nucleon

• different number of neutron

• different number of electron