The energy absorbed by each molecule (A2) of a substance is 4.4 x 10-19 J and bond energy per molecule is 4.0 x 10-19 J . The kinetic energy of the molecule per atom will be (a
a.2.2 x 10-19 J
b.2.0 x 10-19 J
c.2.0 x 10-20 J
d.2.0 x 10-20 J