The Basics of Bonding - U6 L1

What are valence electrons and why are they important in chemistry?

• Electrons located in the innermost energy level, responsible for stability

• Electrons located in the outermost energy level, responsible for bonding

• Electrons located in the nucleus, responsible for mass

• Electrons located in the outermost energy level, responsible for color

What is the octet rule?

• Atoms will gain or lose enough electrons to have 10 electrons

• Atoms will gain or lose enough electrons to become isoelectronic with a noble gas

• Atoms will gain or lose enough electrons to have 6 electrons

• Atoms will gain or lose enough electrons to become isoelectronic with a metal

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

How many electrons must calcium lose or gain to attain a noble gas electron configuration?

• Lose 1

• Gain 2

• Lose 2

• Gain 1

What charge does aluminum obtain when it becomes an ion?

• +3

• -1

• +1

• -2

Which noble gas is Be⁻² isoelectronic with?

• Neon

• Helium

• Argon

• Krypton

Tags

NGSS.HS-PS1-1

Which element's electron dot structure is represented by "·S·"?

• Chlorine

• Sulfur

• Aluminum

• Potassium

How many electrons must phosphorus gain to attain a noble gas electron configuration?

• Gain 1

• Gain 2

• Gain 3

• Lose 3

What is the electron configuration for N⁻³?

• 1s²2s²2p⁶

• 1s²2s²2p⁴

• 1s²2s²2p³

• 1s²2s²2p⁵

Tags

NGSS.HS-PS1-1

Which noble gas is Cl⁻¹ isoelectronic with?

• Neon

• Argon

• Krypton

• Helium

Tags

NGSS.HS-PS1-1

What charge does sulfur obtain when it becomes an ion?

• +2

• -2

• +1

• -1