A silver atom in a solid oscillates in simple harmonic motion in some direction with a frequency of $10^{12}/sec$. What is the force constant of the bonds connecting one atom with the other? <br> (Mole wt. of silver = 108 and Avagadro number = $6.02 \times 10^{23} gm\; mole^{-1}$)

Question

( A ) 5.5 N/m
( B ) 6.4 N/m
( C ) 7.1 N/m
( D ) 2.2 N/m