Answer to Question #247086 in General Chemistry for Bambie

Question

Determine the mass number for atoms with the following subatomic makeups 10. 2 protons, 2 neutrons, and 2 electrons

Answer 1

Both have approximately the same masses.

Absolute mass of neutron=1.675×10^(-27) ×2 kg

Relative mass of neutron=1 u

Absolute mass of proton=1.673×10^(-27) ×2kg

Relative mass of proton=1 u

Note: Since the mass of an electron is so less i.e. it is so negligible that it doesn't much affect the mass.

Mass of electron= 9.109×10^(-31) kg×2.