Unit 5 Chemistry Weekly Quiz 1-11/12-23

Which of the following elements has 5 valence electrons?

• Phosphorous (15)

• Chlorine (17)

• Boron (5)

• Manganese (25)

How many valence electrons does Strontium (38) have?

• 2

• 38

• 4

• 50

What atom matches this electron configuration?

[Ar]4s²3d¹⁰

(a)  

Which electron configuration belongs to Chlorine (17)?

• 1s² 2s² 2p⁶ 3s² 3p⁵

• 1s² 2s² 2p⁶ 3s² 3p⁶

• 1s² 2s² 2p⁶ 3s² 3p⁷

• 1s² 2s² 2p⁶ 3s⁴ 3p³

How many maximum electrons can the d sublevel hold?

• 14

• 10

• 2

• 6

What atom matches this electron configuration?
1s²2s²2p⁶3s²

(a)  

Choose the correct shortcut configuration for iodine.

• [Ar]4s²4d¹⁰4p⁵

• [Kr]5s²4d¹⁰5p⁵

• [Xe]5s²5d¹⁰5p⁵

• [Kr]5s²5d¹⁰5p⁵

Which of the following sub levels does not exist

• 2p

• 3d

• 2d

• 5f

• 4f

Tags

NGSS.HS-PS1-1

This could be the dot diagram of

• Mg

• Cl

• C

• N

• O

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