The energy absorbed by each molecule $ (A_2) $of a substance is $ 4.4 × 10^{–19 }J $ and bond energy per molecule is $ 4.0 × 10^{–19 }J $. The kinetic energy of the molecule per atom will be :

Question

( A ) $4\times 10^{–19} J$
( B ) $4.0\times 10^{–20 } J$
( C ) $ 2.0\times10^{–20}J $
( D ) $2.2\times 10^{–19} J$