8A.4

Question 1

what is a systematic name

Answer 1

when an element can have more than one oxidation number its compounds, and ions are given a name that includes the oxidation number written in roman numeral in brackets these names are called systematic manes

Question 2

what is the roman numeral

Answer 2

1	I	1
2	II	1+1
3	III	1+1+1
4	IV	5-1
5	V	5
6	VI	5+1
7	VII	5+1+1
8	VIII	5+1+1+1
9	IX	10-1
10	X