Counting Protons, Neutrons, Electrons

The atomic number is the same as......

• the number of protons

• the number of electrons

• the number of neutrons

• the number of protons plus neutrons

Tags

NGSS.MS-PS1-1

The mass number is the same as......

• the number of protons

• the number of electrons

• the number of neutrons

• the number of protons plus neutrons

If we are talking about the isotope carbon-14, the mass number of this isotope is.....

• 12

• 13

• 14

• 6

Tags

NGSS.HS-PS1-8

If we are talking about the isotope carbon-13, the mass number of this isotope is...

• 12

• 13

• 14

• 6

Isotopes of an element have different numbers of ......

• protons

• neutrons

• electrons

This picture shows different isotopes of hydrogen written in isotope notation. What is the mass number of deuterium?

• 1

• 2

• 3

Tags

NGSS.MS-PS1-1

This picture shows different isotopes of hydrogen written in isotope notation. What is the atomic number of deuterium?

• 1

• 2

• 3

Tags

NGSS.MS-PS1-1

This picture shows different isotopes of hydrogen written in isotope notation. What is the mass number of tritium?

• 1

• 2

• 3

Tags

NGSS.MS-PS1-1

This picture shows different isotopes of hydrogen written in isotope notation. How many protons does tritium have?

• 1

• 2

• 3

Tags

NGSS.MS-PS1-1

This picture shows different isotopes of hydrogen written in isotope notation. How many neutrons does tritium have? (remember-- mass number is protons plus neutrons)

• 1

• 2

• 3

Tags

NGSS.MS-PS1-1