25) What occurs when an atom loses an electron?

A) The atom's radius decreases and the atom becomes a negative ion.
B) The atom's radius decreases and the atom becomes a positive ion.
C) The atom's radius increases and the atom becomes a negative ion.
D) The atom's radius increases and the atom becomes a positive ion.

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.