Question

Fill in the blanks:-
1.Dalton used symbol__for oxygen and___for hydrogen.
2.symbol represent___atom(s) ofan element.
3.symbolic expression for a molecule is called___.
4.sodium chlorine has two radicals. Sodium is a ___ radical while choride is a____ radical.
5.Valency of iron in FeCI2 is___ and in FeCI3 it is ___.
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Answer 1

Answer:

1. O and H

Explanation:

oxygen - O

Hydrogen - H