Molecular (Covalent) Compounds formulas and names

A covalent bond (molecular bond) exists between

• 2 metals

• 1 metal and 1 nonmetal

• 2 nonmetals

• Any 2 elements

What is the correct name for C₄H₆?

• Carbon Hexahydride
• Pentacarbon Pentahydride
• Hexacarbon Tetrahydride
• Tetracarbon Hexahydride

Tags

NGSS.MS-PS1-1

What is the correct name for NO?

• Mononitrogen Monoxide
• Nitrogen Monoxide
• Mononitrogen Dioxide
• Nitrogen Oxide

Tags

NGSS.MS-PS1-1

What is Sulfur Trichloride?

• SCl₃
• SiCl₃
• SCl₄
• Si₃Cl

The covalent compound N₂O₅ would be named

• nitrogen oxide.
• dinitrogen oxide.
• nitrogen pentoxide.
• dinitrogen pentoxide.

When naming covalent compounds...

• prefixes are used to indicate number of atoms of each element

• roman numerals may be in the name

• the prefix mono- is used for the first nonmetal

• all of these are true

When writing formulas for covalent compounds...

• you "crisscross" charges

• you need to use ionic charges

• look at the prefix on the name to determine the number of atoms of each element

• polyatomic ions may be in parentheses

Name the prefix used for a subscript of 7.

• septa

• hexa

• octa

• hepta

What is the name of S₆O₃?

• sulfurehexa trioxide

• hexasulfur trioxide

• hexasulfide trioxide

• trioxygen hexasulfide

What is the correct formula for phosphorous trichloride?

• P₃Cl
• PCl₃
• KCl₃
• K₃Cl