Isotopes

How many protons are in lithium?

• 7

• 4

• 3

Tags

NGSS.MS-PS1-1

How many electrons does a neutral atom of lithium have?

• 7

• 4

• 3

Tags

NGSS.MS-PS1-1

How many neutrons does lithium have?

• 10

• 7

• 4

• 3

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

• protons only

• neutrons only

• electrons only

• protons and neutrons

• protons and electrons

Isotopes are atoms of the same element with ...

• a different number of NEUTRONS

• a different number of ELECTRONS

• a different number of PROTONS

What is the mass number of potassium - 41

• 19

• 22

• 41

• K

Tags

NGSS.MS-PS1-1

What charge do protons have?

• positive

• negative

• no charge (neutral)

Electrons have a __________ charge.

• positive

• negative

• neutral

Tags

NGSS.MS-PS2-3

Mass number is equal to ...

• the number of protons in the nucleus of an atom

• the number of protons, neutrons & electrons in an atom

• the number of protons and neutrons in the nucleus of an atom

What is the atomic number of silver?

• 47

• 60

• 107.8682

• Not enough information

Tags

NGSS.MS-PS1-1