Unit 5 Quiz

Which of the following elements is an exception to the octet rule?

• helium

• oxygen

• chlorine

• magnesium

Anions have

• gained electrons.

• lost electrons.

• gained protons.

• lost protons.

Which of the following groups on the Periodic Table will only form ions with positive charges?

• Group 2

• Group 15

• Group 17

• Group 18

The Lewis Dot structure for aluminum would have ______ electrons.

• 13

• 3

• 8

• 27

Tags

NGSS.HS-PS1-1

Oxygen has six valence electrons. When forming an ion, oxygen will

• lose six electrons and have a charge of +6.

• lose six electrons and have a charge of -6.

• gain two electrons and have a charge is +2.

• gain two electrons and have a charge of -2.

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What is the formula for magnesium chloride?

• MgCl
• Mg₂Cl
• MgCl₂
• Mg(ClO₃)₂

Tags

NGSS.HS-PS1-2

What is the formula for magnesium phosphate

• Mg₃P₂
• Mg₂P₃
• Mg₂(PO₄)

• Mg₃(PO₄)₂

Name this compound: 
Ca(CO₃)

• Calcium carbon oxide
• Calcium (II) carbonate
• Calcium carbonate
• Carbonate (I) calcide

Tags

NGSS.HS-PS1-1

Which of these elements would form an anion during ion formation?

• Argon

• Lithium

• Calcium

• Fluorine

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which of the following is the correct formula for these two ions: Al⁺³ & S^-2

• AlS₃

• Al₂S₃

• Al₃S₂

• Al₃S