Which of these best describes why a metal has the specific physical property of malleability?
a) the metal atoms are loosely packed together.
b) the positive cations are attracted to the negative anions.
c) the ionic bond it forms with a nonmetal stretches the atoms apart.
d) the free electrons enable the atoms to move and roll over each other.

One of the hopes for solving the world's energy problem is to make use of the fusion reaction 21h +31h --> 42he + 10n + energy how much energy is released when 1 mol of deuterium is fused with 1 mol of tritium according to the above reaction? the masses of the atoms and the neutrons are as follows: 21h = 2.0140 amu 31h = 3.01605 amu 42he = 4.002603 amu 10n = 1.008665 amu. the speed of light is 2.9979 x 108 m/s.