Which statement is true about writing chemical formulas of covalent compounds?

Question options:

A.) Prefixes indicate the subscript for each element.

B.) “Swap and Drop” the ion charges.

C.) Simplify the subscripts to the smallest ratio.

D.) Write the symbol for the cation and the anion.

correct answer is A hope I'm not to late responding

Explanation:

the equation that correctly represent the reaction for formation of ammonia is

n2+ 3h2 → 2nh3 (answer d)

1 mole of nitrogen gas (n2) react with 3 moles of hydrogen gas (h2) to form 2 moles of ammonia ( nh3). this is in a process known as haber process were iron is used as a catalyst and reaction take place that a higher temperature and pressure. the process is exothermic hence energy is released.