electron arrangement

How many electrons can the first energy level hold?

• 1
• 2
• 8
• 0

How many valence electrons are represented here?

• 7
• 5
• 2
• 8

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

How many total electrons does element 15 have?

• 5
• 2
• 8
• 15

Tags

NGSS.HS-PS1-1

The energy of an electron __________ as it moves further away from the nucleus

• increases
• decreases
• remains the same

How does the energy of an electron change when the electron moves closer to the nucleus?

• it decreases.
• it increases.
• it stays the same.
• it doubles.

Tags

NGSS.HS-PS1-1

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

• 18
• 8
• 32
• 2

What are Valence electrons defined as ?

• as electrons in the atom's outermost energy level. 
• as electrons in the atom's innermost energy level.

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

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

How many valence electrons does Si contain? 

• 14
• 28
• 2
• 4

Tags

NGSS.HS-PS1-1

If an atom has 4 protons, how many valence electrons will it have?

• 4
• 6
• 2
• 0

Tags

NGSS.HS-PS1-1