An ion is an atom with a net electrical charge due to

Explanation:

Loss of one or more electrons by a neutral atom will help the neutral atom to acquire a positive charge.

For example, atomic number of sodium is 11 and to stabilize itself it needs to lose one electron. So, by losing an electron it will change into ion.

On the other hand, gain of one or more electrons by a neutral atom will help the neutral atom to acquire a negative charge.

For example, Cl has atomic number 17 and to fill its octet completely it need one more electron. So, by gaining an electron is will change into ion.

Therefore, we can conclude that an ion is an atom with a net electrical charge due to loss or gain of electrons.

- 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

2b2t

explanation:

2b2t