Question

Give the systematic names for the formulas or the formulas for the names: (a) Sn(SO3)2; (b) potassium dichromate; (c) FeCO3; (d) copper(ll) nitrate.

Answer 1

Answer:

a) $Sn(SO_3)_2$ :  tin(IV) sulphite

b)  potassium dichromate :  $K_2Cr_2O_7$

c)  $FeCO_3$ : iron (II) carbonate

d) copper(ll) nitrate: $Cu(NO_3)_2$.

Explanation:

$Sn(SO_3)_2$ , $K_2Cr_2O_7$, $FeCO_3$ ad $Cu(NO_3)_2$ are ionic compounds because they are formed by transference of electrons between metals and non metals.The bond formed between a metal and a non-metal is always ionic in nature.

For formation of a neutral ionic compound, the charges on cation and anion must be balanced. The cation is formed by loss of electrons by metals and anions are formed by gain of electrons by non metals.

The nomenclature of ionic compounds is given by:

1. Positive is written first followed by the oxidation state of metal in roman numerals in square brackets.

2. The negative ion is written next and a suffix is added at the end of the negative ion. The suffix written is '-ide'.

Hence, the name of $Sn(SO_3)_2$ is tin(IV) sulphite, potassium dichromate is $K_2Cr_2O_7$ , $FeCO_3$ is iron (II) carbonate and copper (II)nitrate is $Cu(NO_3)_2$.