Chemistry

When naming ionic compounds with transition metals you need to include roman numerals to show the _____ of the metal..

• atomic number
• mass number
• charge
• ionization energy

What is the chemical formula for an ionic compound of Potassium K ⁺¹and Oxygen O^2- ?

• KO

• K₂O

• K₂O₂

• KO₂

What is the name for SiCl₄?

• silicon tetrachloride

• silicon quadchloride

• monosilicon tetrachloride

• silicon chloride

What is the formula for diphosphorus pentoxide?

• P₂O₅

• PO₅

• P₅O₂

• Po₂O₅

Name the ionic compound, FeBr₃

• Iron (II) bromide

• Iron (III) bromide

Name the ionic compound, CaCO₃

• calcium carbide

• calcium carbon trioxide

• calcium carbon oxide

• calcium carbonate

Name the ionic compound, LiCl

• lithium chlorine

• lithium chloride

• lithium chlorate

• lithium monochloride

How do you calculate mass number?

• Mass x percent

• Protons + Electrons

• Protons + Neutrons

• Neutrons + Protons + Electrons

76 protons and 114 neutrons

• Osmium-114

• Osmium-76

• Osmium-190

• Osmium-190.23

Potassium-39 has how many neutrons?

• 19

• 18

• 20

• 21