Name the cation present in NaCl ?
Na+
Cl-
NaCl
2 Na
In Au3+, 3 electrons are :
Gained
Lost
Stable
Exchanged
Among the following which is a monovalent poly atomic ion ?
HSO4-
ClO-
a and b
SO32-
Non-metals usually forms :
Cations
Radicals
Polyvalent cations
Anions
Atomic number of sodium is 11. Then the number of electrons in sodium ion is :
10
11
9
12
Valency of pottassium is 1. valency of chlorine is 1. Write the formula of pottassium chloride ?
KCl
K1Cl1
KCl-
2 KCl
Pick out the correct chemical formula of sodium nitrate ?
Na2CO3
NaNO3
2 NaCO3
Na2(CO3)2
Identify the polyatomic ion from the following ?
O2-
NH4+
What are the charged particles formed by the transfer of electrons from one element to another element ?
Molecules
Atom
Ions
Metals
Match the following ?
a. Cl- - i. Poly atomic ion
b. Cr2+ - ii Mono atomic ion
c. NH4+ - iii. Mono atomic cation
d. PO43- - iv.Poly atomic cation
a.ii b.iii c.iv d.i
a.i b.ii c.iii d.iv
a.iii b.iv c.i d.ii
a.iv b.i c.ii d.iii
