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If an atom has atomic number = 6 and number of neutrons = 10, then what is the atomic mass of the atom?
4
16
10
6
16
The atomic mass of an atom is defined as the sum of the number of protons and the number of neutrons present in its nucleus. Since the atomic number is equivalent to the number of protons, the atomic mass is calculated by adding the atomic number to the number of neutrons.
The atomic mass of an atom is defined as the sum of the number of protons and the number of neutrons present in its nucleus. Since the atomic number is equivalent to the number of protons, the atomic mass is calculated by adding the atomic number to the number of neutrons.
Think of an atom as a backpack where protons are like heavy textbooks and neutrons are like heavy notebooks. To find the total weight of the 'core' contents of the bag, you simply add the number of textbooks and notebooks together.
MAN: Mass = Atomic number + Neutrons
A=Z+N тАФ where A is the atomic mass, Z is the atomic number, and N is the number of neutrons.
The nucleus of an atom contains nucleons, which are protons and neutrons. The atomic number (Z) determines the number of protons, and the mass number (A) represents the total count of these nucleons. The formula A=Z+N follows the additive nature of subatomic mass particles, where electrons are excluded due to their negligible mass.
The atomic number (Z) is strictly equal to the number of protons in a neutral atom.
Mass of electrons is approximately 18361тАЛ of a proton, so it is ignored in mass calculations.
Isotopes of the same element have the same atomic number but different neutron counts, resulting in different atomic masses.
Determining isotopic identity
Calculating relative atomic mass of elements
For this specific atom, A=6(protons)+10(neutrons)=16.
Option A (4) is incorrect as it is less than the count of neutrons.
Option C (10) is the number of neutrons only.
Option D (6) is the atomic number only.
B is correct тАФ The atomic mass is the sum of the atomic number (protons) and neutrons, yielding 6+10=16.
Always verify if the question asks for mass number (sum of protons and neutrons) or atomic weight (weighted average of isotopes); in this context, it asks for mass number.
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