NURSING ANM AND GNM

Detailed explanation-1: -Hence, the mass number of an oxygen atom = 8 + 8 = 16.

Detailed explanation-2: -Answer 9: Oxygen is atomic number 8 on the periodic table, which means it has 8 protons!

Detailed explanation-3: -A nitrogen atom with 7 protons and 8 neutrons has a mass number of 15 amu. On the periodic table, the atomic mass for nitrogen is 14.01.

Detailed explanation-4: -The correct answer is option D. The Oxygen (O) has an atomic number of 8 and has a mass number of 16.

Detailed explanation-5: -A neutral atom will have the same number of electrons as protons, so there will be 8 electrons. The mass number is the sum of the protons and neutrons, so 8 protons and 9 neutrons gives a mass number of 17.