The fluoride ion reacts with water to produce HFHF. Part A Write out the chemical equation for this reaction. Express your answer as a chemical formula. Include the physical states.

The chemical reaction is ;

Explanation:

The chemical reaction of formation of hydro fluoric acid  by reaction of fluoride ions and water is given by :

According to reaction, when 1 mole of fluoride ions react with 1 mole of water they give hydro fluoric acid  and hydroxide ions as product.

- 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