Question

Q1) Define :-
a) Symbol b) Valency c) Radicals
Top
Q2) What is variable valency? Give two examples of elements where
you find variable valency.
Q3) Give the symbols and valencies of the following radicals :-
a) Hydroxide
b) Chloride
c) Carbonate
d) Oxide
e) Ammonium
f) Nitrate
Q4) Learn the tables 5.1 to 5.7.
Q5) The valency of Calcium is 2. Write the valency of other radicals
found in the following compounds.
a) Calcium chloride b) Calcium oxide
c) Calcium nitride d) Calcium carbide
e) Calcium sulphate f) Calcium sulphite
Q1. Write the molecular formula for the following compounds :-
a) Sodium nitrate
b) Potassium sulphate
c) Aluminum phosphate d) Zinc sulphate
e) Ferric chloride
f) Mercuric iodide
g) Aluminium nitride h) Sodium bicarbonate
i) Ammonium phosphate j) Common salt
k) Carbon tetrachloride 1) Baking soda
Q1. Define :- a) Law of conservation of mass
b) Skeletal equation c) Balanced chemical equation
d) Reactants e) Products
please answer this question I will marks you as a brainliest ​

Answer 1

Q3)a)OH valency -1

b)cl valency 1

c)co3 valency -2

d)Nh4 valency 1

f)No3 valency -1

Q5)a)cacl2 radical valency 1

b)cao radical valency 1

c)ca(No2)2 radical valency 1

d)ca4(c4)2 radical valency 4

e)caso4 radical valency 2

f)caso3 radical valency 2

Q1)a)NaNO3

b)KSo4

c)AlPo4

d)znso4

e)fecl3

f)HgI2

g)Al(No2)3

h)Na2co3

I)(Nh4)3po4

j)Back

k)ccl4

m)Nahco3