Valency- Ion Formation

A valence electron is what?

• The electron in the outer shell of an atom.

• The electron in the inner shell of an atom.

• The last electron.

• The first electron.

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

The valence electron can

• Cannot interact in a chemical reaction.

• Can interact in a chemical reaction.

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Atoms are electrically neutral when

• They have a minimal charge.

• They have a balanced number of protons and neutrons.

• They have a balanced number of protons and electrons.

• They have no valance electrons.

If an electron is removed, an ion becomes

• An atom

• Positive

• Negative

• Neutral

If an ion gains an electron, it becomes

• Positive

• Stable

• Atomic

• Negative

Cations have what type of charge?

• Positive

• Negative

An ion has what type of charge?

• Negative

• Positive

Which of the following about cations is correct?

• Cations where named after cats.

• Cations form when an atom has a mostly empty outer shell.

• Cations are only non-metals.

• Cations are mostly negative.

What is the charge of Iron(III)

• +3

• +1

• +2

• +4

What is the charge of Fe (I)

• -1

• +1

• +2

• -2