Which property do metalloids share with nonmetals

Metalloids are brittle like nonmetals.

Explanation:

I'm sorry if i'm wrong but this question is a week old so i figured i'd answer it.

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.

c- cold periods in earth's history during which glaciers covered much of the surface.

explanation: