Ionic Naming/Formula Writing

How many valence electrons does selenium have?

• 16
• 6
• 34
• -2

Group 15 elements form what type of charge?

• -1

• -3

• +3

• 15

What is the formula for magnesium chloride?

• MgCl
• Mg₂Cl
• MgCl₂
• Mg(ClO₃)₂

Tags

NGSS.MS-PS1-1

What is an anion?

• positive ion
• negative ion
• neutral atom
• 2 neutrons taken away

The name of NaCl is...

• nitrogen carbide
• sodium chloride
• sodium chlorine
• sodium carbonae

What is a cation?

• positive ion
• Neutral atom
• Two additional protons
• negative ion

When adding a subscript to a polyatomic ion, you should...

• multiply any subscripts on the polyatomic ion by the subscript you are adding
• put parentheses around the polyatomic ion before adding a subscript
• write the new subscript next to any subscripts on the polyatomic ion
• put the polyatomic ion in square brackets before adding the subscript

What is the formula for calcium chloride

• CaCl
• CaClO
• CaCl₂
• Ca(ClO)₃

Which of these combinations is an ionic compound made of?

• Metal and Metal
• Nonmetal and Nonmetal
• Metal and Nonmetal
• Cation and Cation

What is the formula for copper(I) sulfate?

• CuSO₃
• CuSO₄
• Cu₂SO₃
• Cu₂SO₄