Alkali metals have low melting and boiling point due to the _______ in the crystal lattice.
Strong bonding
Weak bonding
High atomic weight
_______ is used as a propellant in nucleus.
H2O2
D2O
ND3
CH2 = CH2
The half life of tritium is
~ 13.2 years
~ 12. 3 years
~ 14. 3 years
~ 10 years
Protium consists of one proton and ______
three neutrons
no neutrons
two neutrons
one neutron
_________is heavy water
H2180
H2160
H203
D20
Which of the following is incorrect?
H2O2 is a weak acid
H2O2 is a weak alkali
H2O2 acts as an oxidising agent
H2O2 is a reducing agent
____________ can be prepared by bombarding lithium with slow neutrons.
protium
deuterium
tritium
none of these
The oxidation state of alkali metals is
+2
0
+1
+4
Para and ortho hydrogen differ in
atomic number
atomic mass
spins of protons
number of neutrons
