Atomic structure

How many protons in a neutral lithium atom?

• 3

• 7

• 4

• 1

Tags

NGSS.MS-PS1-1

How many protons in a neutral oxygen atom?

• 8

• 7

• 10

• 16

Tags

NGSS.MS-PS1-1

How many protons in a neutral nitrogen atom?

• 14

• 7

• 10

• 4

Tags

NGSS.MS-PS1-1

What is the charge of an atom that has lost one electron?

• -1
• -2
• +1
• +2

What is the charge of an atom that has gained one electron?

• -1
• -2
• +1
• +2

The aluminum ion in the image

• gains 3 electrons.

• loses 3 electrons.

• has 3 more protons than electrons.

• has 13 protons, 10 electrons, 14 neutrons

• has 13 protons, 13 electrons, 27 neutrons

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

How many neutron are in the atom "K"?

• 29

• 19

• 58

• 20

The atomic number is equal to _.

• the number of protons and electrons
• the number of neutrons only
• the total number of protons and neutrons
• the number of protons neutrons and electrons

Tags

NGSS.MS-PS1-1

An atom becomes _________ when it gains electrons.

• Positive
• Negative
• Neutral
• Invinsible

What subatomic particle has a negative charge?

• Electrons

• Neutrons

• Protons

• Nucleus