Ion Formation and Bonds

Ionic bonds form due to _______.

• attraction between opposite charges

• attraction between two nuclei

• attraction between a nucleus and another atom's electrons, as well as the overall opposite charges of two ions

• attraction between electrons and a cation

Tags

NGSS.HS-PS1-3

Which of these is the electron configuration of an atom most likely to lose and electron?

• 1s2 2s2 2p6

• [He]2s2 2p5

• 1s2 2s2 2p6 3s2 3p5

• 1s2 2s2 2p6 3s2 3p6 4s1

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

A positive ion forms when ________.

• an atom loses one or more valence electrons

• an atom gains one or more valence electrons

• electrons are pulled into the nucleus

• electrons are pushed out of the nucleus

Why is the calcium ion (Ca2+) more stable than the calcium atom (Ca)?

• Twenty electrons are more stable than eighteen electrons.

• Eighteen electrons are less stable than twenty electrons.

• The two electrons more than the noble gas configuration is more stable.

• The noble gas configuration is more stable.

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Ionic bonds typically form between

• A metal and a nonmetal

• Two nonmetals

• Two metals

• A metalloid and a metal

Tags

NGSS.MS-PS1-1

How many electrons does a chloride ion (Cl⁻) have?

• 16

• 17

• 18

• 19

Tags

NGSS.MS-PS1-1

How is an ionic bond formed?

• Sharing of electrons

• Delocalised electrons

• Transfer of electrons

Tags

NGSS.HS-PS1-3

Which of the following elements is most likely to form a cation? (Clue - metal)

• Oxygen

• Chlorine

• Sodium

• Sulphur

Tags

NGSS.MS-PS2-3

What is the charge of a cation?

• Positive

• Negative

• Neutral

• Variable

What is the charge of an anion?

• Positive

• Negative

• Neutral

• Variable