An element's atomic number refers to — ( I WILL MAKE U BRAINLIEST)

A. the order in which the element was discovered

B. the number of protons in its nucleus

C. the number of atoms it is composed of

D. the number of other elements it will combine with

THE ANSWER IS B

Explanation:

The atomic number is the number of protons in the nucleus of an atom. The number of protons define the identity of an element (i.e., an element with 6 protons is a carbon atom, no matter how many neutrons may be present

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.

yes they ca   is ur ansswerrr