Identify the polyatomic ion from the following ?
Cl-
O2-
Na+
NH4+
The acid radical present in sodium sulphate compound is :
Sodium
Sulphate
Water
Sodium hydroxide
Name the cation present in NaCl ?
NaCl
2 Na
Atomic number of sodium is 11. Then the number of electrons in sodium ion is :
10
11
9
12
Formula of Alumminium oxide is Al2O3. What is the valency of Alumminium ?
2
1
3
4
Among the following which one is a mono atomic cation ?
Sodium ion
Fluoride ion
Sulphate ion
Calcium ion
Valency of pottassium is 1. valency of chlorine is 1. Write the formula of pottassium chloride ?
KCl
K1Cl1
KCl-
2 KCl
Among the following identify the information which are conveyed by chemical equations ?
Relative masses
Heat changes
Concentration
Time factor
Among the following which is a monovalent poly atomic ion ?
HSO4-
ClO-
a and b
SO32-
Metals usually form:
Cations
Anions
Radicals
Polyvalent anion
