Make a He atom with a mass of 4. How many protons did you put in the nucleus? Make a Li atom with a mass number of 7. How many electrons did you place in the outermost orbital (ring)?

Make a N atom with a mass number of 14. How many neutrons are in the nucleus?

Make a B atom with a mass number of 11. How many electrons did you put in the second orbital (ring)?

He has two protons

Li electron has one electron in its outermost orbital.

Number of neutrons of nitrogen = seven neutrons

The second shell of boron: 3 electrons.

Explanation:

An atom is composed of electrons, protons and neutrons. The number of neutrons is determined by subtraction of the atomic number from the mass number.

The electronic configuration is already known for each of atoms in these questions according to standard tables.