GC1 Week 3

NAMING IONIC COMPOUNDS:
If the compound is ionic, then the name of the _____ comes first,
followed by the compound name of the _____.
To find the compound name of anion, replace end of the element’s name with –ide.

• anion (non-metal) comes first, followed by the compound name of the cation (metal)
  
  name of anion + name of cation, suffix ‘ide’

• cation (metal) comes first, followed by the compound name of the anion (non-metal)
  
  name of cation + name of anion, suffix ‘ide’

(NAMING COMPOUNDS: Choose the right suffix)
name of cation + name of anion, suffix ‘___’

• -ide

• -ate

• -ic

Answer explanation

name of cation + name of anion, suffix ‘ide’
Ex: NaCl (sodium chloride)

Na = cation (metal)
Cl = anion (non-metal)

(NAMING COMPOUNDS: Choose the right suffix)
hydrogen + non-metal, ‘___’

• -ide

• -ate

• -ic

Answer explanation

• If the compound contains hydrogen and a non-metal and does not contain water (H2O), then the hydrogen comes first followed by the element’s name replaced with ‘ide’ suffix.
  
  hydrogen + non-metal, suffix ‘ide’

Ex: HF (hydrogen fluoride)

If the compound contains hydrogen and a metal, the metal comes first, followed by ‘______’

metal + ______

• -ite

• -ate

• -ic

• hydride

Answer explanation

• If the compound contains hydrogen and a metal, the metal comes first, followed by the word ‘hydride’, to denote the hydrogen component.
  

metal + hydride

Ex: NaH (sodium hydride)

 If the compound contains hydrogen and an oxygen anion (oxyanion) and does not contain water, then ________ comes first, followed by the element name with the suffix ‘___’.

• element + hydrogen, suffix ‘ate’

• hydrogen + element, suffix ‘ide’

• hydrogen + element, suffix ‘ate’

• element + hydrogen, suffix ‘ide’

Answer explanation

• When naming ionic compounds that contain oxygen the basic rule is similar. If the compound contains hydrogen and an oxygen anion (oxyanion) and does not contain water, then hydrogen comes first, followed by the element name with the suffix ‘ate’.
  

hydrogen + element, suffix ‘ate’

Ex: H2CO3 (hydrogen carbonate)

If a compound contains two non-metals in a covalent bond,
The least electronegative element is named first

• True

• False

If a compound contains two non-metals in a covalent bond, then:
If the compound contains hydrogen, hydrogen is named _______

• first

• last

If a compound contains two non-metals in a covalent bond, then:
The number of atoms of each element is indicated by a _____

• suffix

• prefix

If a compound contains two non-metals in a covalent bond, then:
 If the first element has only one charge, the prefix is not used

• true

• false

If a compound contains two non-metals in a covalent bond, then:
The name of the element has only one charge, the prefix is used.

• true

• false