A compound contains 0.5 mol Na, 0.5 mol N, and 10 mol H. The empirical formula of

NaNH₂₀

Explanation:

0.5 mol Na, 0.5 mol N, and 10 mol H

To obtain the empirical formulae, we find the mole ratio between the elements and this is done by dividing all through by the smallest mol (0.5)

Na = 0.5 / 0.5 = 1

N = 0.5 / 0.5 = 1

H = 10 / 0.5 = 20

The mole ratio is used to write the empirical formulae. It is given as;

NaNH₂₀

The correct answer is electrons.

Explanation:

The atoms are that of which the whole matter of the universe is composed. It is the smallest unit of matter that has chemical properties.

Within each atom there are extremely small particles, which are called subatomic particles.

Atoms have three basic parts: electrons, neutrons and protons.

Of these three, the smallest are the electrons, who are orbiting the nucleus of the atom, while the neutrons and protons are inside the nucleus.

Given this information we can say that the correct answer is elecetrons.