Periodic Table of Elements Review

What is the atomic number?

• 2

• He

• Helium

• 4.003

Tags

NGSS.MS-PS1-1

What is the name of the element?

• He

• 2

• 4.003

• Helium

What is the atomic mass?

• He

• 2

• 4.003

• Helium

Tags

NGSS.MS-PS1-1

What is the symbol for this element?

• He

• Helium

• 4.003

• 2

What is the atomic number for Nitrogen?

• 7

• 14

• 21

• 28

How many protons does the element Nitrogen have?

• 7

• 14

• 21

• 28

Tags

NGSS.MS-PS1-1

How many electrons does the element Nitrogen have?

• 7

• 14

• 21

• 28

Tags

NGSS.MS-PS1-1

What si the atomic mass number for the element Nitrogen?

• 7

• 14

• 21

• 28

How many neutrons does the element Nitrogen have?

• 7

• 14

• 21

• 28

In a neutral atom, the number of protons equals the number of

• nuclei.

• isotopes.

• electrons.

• neutrons.