how the element with variable valency named give 2 examples
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hydrogen is one as unit has one electron in its outermost shell and requires on electron to become stable
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Elements with variable valencies are named in Two ways :-
For an element with the lower valency it's name ends with suffix-ous.
For an element with higher valency it's name ends with suffix-ic
Some elements exibiting variable valency are:-
Iron
Valency of Iron are 2,3
Iron(3) is called Ferric
Iron (2) is called Ferrous
Copper
Copper has valency of 1,2
Copper(1) is Cuprous
Copper(2) is Cupric
SOME OTHER ELEMENTS SHOWING VARIABLE VALENCY
Cobalt
Vanadium
Manganese(3 valency)
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