Why do metals tend to lose electrons to form positive ions?
a) they hold on tightly to electrons.
b) a metals atom loses its few valence electrons to form a full octet.
c) they conduct electricity, which makes them lose their electrons
d) the positive ions that are formed when metals lose electrons are more reactive than the neutral metals

- calcium has greater affinity to bond with electron receptors than hydrogen does and hence, it has the ability to replace hydrogen in most of its compounds.

- lithium has 2 valence electrons in the product because it can make only 1 bond with hydrogen. beryllium has 4 valence electrons in the product because it can only make 2 bonds. it has fewer electrons than neon and can react with electron donors. each hydrogen has 2 valence electrons, the same as helium.

- the covalent bond formed between carbon and hydrogen is polar because carbon is more electronegative than hydrogen and it attracts the bonded electron pair closer to itself, thus giving hydrogen a partial positive charge.

- a hydrogen bond is a relatively weak bond that hydrogen atoms make with the electronegative atoms nitrogen, oxygen or fluorine.

so the best choice is a.) 2 calcium (ca) atoms

answer:

technetium is the most reactive. this is followed by silver. the least reactive out of these three elements is strontium.