Question

In ammonia (NH3) molecule, the three hydrogen atoms form an equilateral triangle, the distance between the centers of the atoms being 16.28x10^-11 m, so that the center of the triangle is 9.40x10^-11 m from each hydrogen atom. The nitrogen atom is at the apex of the pyramis, the three hydrogens consistuting the base. The nitrogen/hydrogen distance is 10.14x10^-11 m and the nitrogen/hydrogen atomic mass is 13.9. Locate the center of mass relative to the nitrogen atom

Answer 1

How can the nitrogen/hydrogen mass be 13.9amu? That is less than nitrogen.

Answer 2

the atomic mass ratio is 13.9 as nitrogen is a 14.008 and hydrogen is 1.008 approximately