Language of Chemistry

Question 1

Binary compounds representation

Answer 1

• Elements (except H) further to the left of the periodic table appears
  first

Hydrogen exception: written last except when with group 16 or 17

If both elements are from the same group the lowest element
appears first

In ionic compounds the cation is followed by the anion

Question 2

1. Ionic compounds

Answer 2

 Cation followed by anion. e.g. NaBr, MgCl
2
 Total charge zero:

Question 3

what are Binary ionic compounds

Answer 3

Binary ionic compounds
contain positive cations and
negative anions

Question 4

Type I compounds

Answer 4

Type I compounds
* Metal present forms
only one cation

Question 5

Type II compounds

Answer 5

Type II compounds
* Metal present can form
2 or more cations with
different charges

Question 6

Rules for Naming Type I Ionic Compounds

Answer 6

1. The cation is always named first and the anion second.
2. A simple cation takes its name from the name of the element.
   A simple anion is named by taking the first part of the element name
   (the root) and adding –ide.

Question 7

IUPAC Binary Ionic Compounds (Type II)

Answer 7

• Metals in these compounds
  can form more than one type
  of positive charge.
• Charge on the metal ion must
  be specified.
• Roman numeral indicates the
  charge of the metal cation.
• Transition metal cations
  usually require a Roman
  numeral.

Question 8

Rules for Naming Type II Ionic Compounds

Answer 8

1. The cation is always named first and the anion second.
2. Because the cation can assume more than one charge, the
   charge is specified by a Roman numeral in parentheses.

Question 9

what is an allotrope?

Question 10

Parent chain:

Answer 10

the longest carbon chain.

Question 11

Substituents:

Answer 11

any branch off the parent chain, named based on alkyl groups.