Oxidation Numbers

What rule states that elements will gain or lose electrons to obtain a noble gas electron configuration?

• The duet rule

• The quantum rule

• The octet rule

• The electron rule

Tags

NGSS.HS-PS1-2

What determines whether an element gains or loses electrons?

• Its molecular weight

• The nearest noble gas

• Its position on the periodic table

• Its atomic number

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

For oxygen, is it easier to gain or lose electrons?

• Gain two

• Lose six

• Gain six

• Lose two

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What is the easiest path for sodium regarding electrons?

• Gain one

• Lose one

• Gain seven

• Lose seven

Tags

NGSS.HS-PS1-1

What is the oxidation number of oxygen when it gains two electrons?

• -2

• +2

• -1

• +1

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

How many valence electrons does sulfur have?

• 16

• 4

• 6

• 2

Tags

NGSS.HS-PS1-1

What is the possible charge of sodium when it loses an electron?

• -2

• +1

• -1

• +2

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What happens to an atom's charge when it gains electrons?

• It becomes more positive

• It becomes neutral

• It becomes more negative

• It remains unchanged

Why does argon neither gain nor lose electrons?

• Because it is a nonmetal

• Because it has no valence electrons

• Because it is a noble gas

• Because it is a metal

Tags

NGSS.HS-PS1-1

Which element is most likely to form a +2 charge?

• Oxygen

• Calcium

• Chlorine

• Hydrogen

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2