Q. The bond dissociation energies of X, Y, and XY are in the ratio of 1: 0.5 : 1. ∆H for the formation of XY is -200 kJ mol-1. The bond dissociation energy of X, will be. (1) 200 kJ mol-1
(2) 100 kJ mol-1
(3) 400 kJ mol-1
(4) 800 kJ mol-1

explanation:

considering the bohr theory, the type of connection that requires the transfer the answer conuldn't be right

see the picture for the vector

the magnitude of the vector by pythagorean theorem

r = √( (-10)^2 + (3)^2 ) = √109

magnitude = √109 units

the direction angle between vector and x-axis is

tan^(-1)(3/10) = 16.699

so the direction is approximately 16.7 degrees north of west