JEE Main PAPER - 1

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