Energy Levels

What is the atomic number of this atom?

• 2

• 4

• 6

• none of the above

Tags

NGSS.MS-PS1-1

What's a valence electron?

• electrons in the second energy level

• electrons in the outermost energy level

• the atomic number

• electrons in the first level

Tags

NGSS.MS-PS1-1

The innermost energy level has a maximum of how many electrons?

• 1

• 2

• 6

• 8

How many valence electrons?

• 2

• 3

• 4

• 5

Tags

NGSS.MS-PS1-1

Which element does this Bohr model represent?

• Aluminum

• Silicon

• Magnesium

• Cobalt

Tags

NGSS.MS-PS1-1

What element does this Bohr model represent?

• Chromium

• Magnesium

• Carbon

• Krypton

Tags

NGSS.MS-PS1-1

What element is this the Bohr model of?

• Fluorine (F)

• Potassium (K)

• Aluminum (Al)

• Boron (B)

Tags

NGSS.MS-PS1-1

How many valence electrons?

• 2

• 3

• 5

• 10

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Write the electron configuration

• 1s²2s²2p⁶

• 1s¹2s¹2p³

• 1s²2s²2p⁶3s²

• 1s²2s²2p⁶3s³

Tags

NGSS.HS-PS1-1

Which of the following statements about energy levels in an atom is correct?

• Electrons can exist between energy levels.

• Energy levels are the same for all elements.

• Electrons can jump between energy levels by absorbing or emitting energy.

• The number of energy levels is infinite.