Question

1. Fill in the blanks :
(a) Dalton used symbol... for oxygen and ......... for hydrogen.
(b) Symbol represents
.... atom of an element.
(c) Symbolic expression for a molecule is called..............
(d) Sodium chloride has two radicals, Sodium is a .........., radical while chloride is a .........
(e) Valency of phosphorus in PCI3 is.......... and in PCI5 is
(f) Valency of Iron in FeCl2 is
........... and in FeCl3 it is
(g) Formula of iron (III) carbonate is.............​

Answer 1

Answer:

O for oxygen &H for hydrogen.

Lewis dot structure

symbolic expression for a molecule is called chemical formula.

sodium is a a basic radical while chloride is acidic.

valency of Phosphorus in pcl3 is 3

valency of Phosphorus in PCL5 is 5

valency of iron in fecl2 is 2

valency of iron in fecl3 is 3.

formula of iron carbonate is FeCo3.

MARK MY ANSWER AS BRAINLIEST