Ion Charge of Elements

How does calcium become an calcium ion?

• it loses 2 electrons

• it gains 2 electrons

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

How does oxygen become an oxide ion?

• it loses 2 electrons

• it gains 2 electrons

Is this ionic bond drawn correctly?

• Yes

• No

Tags

NGSS.MS-PS1-1

When a metal forms more than one ion, the name of the ion contains a Roman numeral to indicate the _____ on the ion.

The formula for sodium sulfide is Na₂S. The sodium ion has a charge of 1+. What must the charge of the sulfide ion be?

• 1+

• 2+

• 1-

• 2-

Magnesium bromide is an ionic compound with the chemical formula MgBr₂.  What does the "2" tell you?

• There are 2 bromide ions for every magnesium ion

• Bromide has a 2- charge

• Bromide has a 2+ charge

• There are 2 magnesium ions to every bromide ion

Tags

NGSS.MS-PS1-1

What is the charge of ion "X" in the formula XF₃?

• +3

• -3

• +1

• -1

What is the charge of ion "X" in CaX?

• +1

• -1

• +2

• -2

Nitrogen will form which of the following ions?

• N

• N^-3

• N^-5

• N⁺⁵

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What is the charge of a chloride ion?

• -1

• +1

• -2

• +2