EVERYDAY SCIENCE

Detailed explanation-1: -0.1 mole contains 5Na electrons.

Detailed explanation-2: -In case of carbon dioxide, C has atomic number 6 so it has 6 electrons and oxygen has atomic no 8, i.e., 16 electrons. So total electrons present are 16+6=22 electrons.

Detailed explanation-3: -Given: Number of mol of carbon = 0.1 mol. Hence, the number of atoms in 0.1 mol of carbon atom is 0.1 NA atoms or 6.022×1022 atoms.

Detailed explanation-4: -The number of electrons in a neutral atom is equal to the number of protons. The mass number of the atom (M) is equal to the sum of the number of protons and neutrons in the nucleus. The number of neutrons is equal to the difference between the mass number of the atom (M) and the atomic number (Z).