Electron Arrangement

How many electrons can the first energy level hold?

• 1
• 2
• 8
• 0

How many total electrons does element 15 have?

• 5
• 2
• 8
• 15

Tags

NGSS.MS-PS1-1

What is the maximum number of electrons in the second energy level?

• 18
• 8
• 32
• 2

What is electron configuration ?

• the arrangement of protons in an atom.
• the arrangement of electrons in an atom.

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Protons are:

• Positive
• Negative
• Neutral
• Exist outside the nucleus

Neutrons are:

• Positive
• Neutral
• Negative
• Exist outside the nucleus

Electrons are: 

• Positive
• Negative
• Neutral

Tags

NGSS.MS-PS2-3

Protons and neutrons can be found:

• Inside the nucleus
• Orbiting the nucleus
• In the electron shell

What is the atomic number?

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

What is the mass number defined as?

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