How many protons does Calcium (Ca) have?

• 18

• 20

• 22

• 24

How many protons does Argon (Ar) have?

• 16

• 18

• 20

• 22

How many neutrons are in Sodium-23?

• 10

• 11

• 12

• 13

What is the formula to calculate the number of neutrons in an atom?

• Atomic number + atomic mass

• Atomic mass - atomic number

• Atomic number × atomic mass

• Atomic mass ÷ atomic number

Write the electron configuration of Fluorine (F).

• 1s² 2s² 2p⁶

• 1s² 2s² 2p⁵

• 1s² 2s² 2p⁴

• 1s² 2s² 2p³

Tags

NGSS.HS-PS1-1

Which element has 64 protons?

• Tin (Sn)

• Xenon (Xe)

• Silver (Ag)

• Gadolinium (Gd)

How many neutrons are in Iron-56?

• 26

• 28

• 30

• 32

Write the electron configuration of Aluminum (Al).

• 1s² 2s² 2p⁶ 3s² 3p¹

• 1s² 2s² 2p⁶ 3s² 3p³

• 1s² 2s² 2p⁶ 3s² 3p²

• 1s² 2s² 2p⁶ 3s² 3p⁴

Tags

NGSS.HS-PS1-1

If an atom has an atomic mass of 35 and an atomic number of 17, how many neutrons does it have?

• 17

• 18

• 19

• 20

Tags

NGSS.MS-PS1-1

Which of the following is the correct electron configuration for Nickel (Ni)?

• 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d⁸

• 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰

• 1s² 2s² 2p⁶ 3s² 3p⁶ 4s¹ 3d⁹

• 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d⁶

Tags

NGSS.HS-PS1-1