Suppose a certain experiment calls for a very stable substance with bond energy greater than 420 kJ/mol. Which of the following pairs of elements in a compound would yield a stable enough substance?

H and B

H and Se

H and S

H and H

the answer is 0.8m.

by: nicholas

c. electrical charges of ionic bonds.

answersilicon (si); oxygen (o);

ca has a crystalline lattice with positive ions (since it is a metal, metals are positively charged) and electrons flow freely in its structure since the ca atoms have a large nuclear radius so the electrons are not tightly held, therefore the electrons can flow freely since they are not being highly attracted by the nucleus. moreover, one of the properties of metals are that they are conductors of electricity, thus proving ca is the element.