Very Short Question and Answers - Atomic Number and Mass Number

The atomic number is defined as the total number of protons present in the nucleus of an atom, denoted by 'Z'.

The atomic number of an element is determined by the number of protons present in its nucleus.

The atomic number of hydrogen is 1.

The symbol 'Z' represents the atomic number of an element.

The atomic number of carbon is 6.

The mass number of an atom is defined as the sum of the total number of protons and neutrons present in the nucleus, denoted by 'A'.

The mass of an atom is primarily due to protons and neutrons, which are also called nucleons.

The mass number of a carbon atom is 12 (6 protons + 6 neutrons).

The mass number of aluminium is 27 (13 protons + 14 neutrons).

Nitrogen is represented as $^{14}_7 \text{N}$, where 14 is the mass number, 7 is the atomic number, and N is the symbol for nitrogen.

The mass number provides the total count of protons and neutrons in an atom's nucleus.

The charge on the atom is neutral since the number of protons equals the number of electrons.

The element with atomic number 8 is oxygen.

It has 16 neutrons (32 - 16 = 16).

Yes, the mass number can equal the atomic number in some isotopes, such as the isotope of hydrogen called deuterium, which has 1 proton and 1 neutron.

The mass number of oxygen is 16 (8 protons + 8 neutrons).

The mass number of sulphur is 32 (16 protons + 16 neutrons).

Having the same atomic number means the two elements are the same element because they have the same number of protons.

No, the atomic number is unique for each element.

The atomic number determines the position of an element in the periodic table.