Atomic mass is determined by the number of protons plus the number of _____. A. Electrons B. Neutrons C. Charges D. Atoms
2 answers:
Atomic mass is calculated by the sum of number of protons and the number of
Further explanation:
The smallest particle that is the building block of matter is known as an atom. Most of the space in an atom is empty and its mass is concentrated inside a small region called the nucleus.
Protons, electrons, and neutrons are the three subatomic particles that are present in the atom. The sum of protons and neutrons are called nucleons because these are located in the nucleus of the atom. Electrons revolve around the nucleus in fixed orbital path. The positively charged subatomic particle is called proton. Neutron is a subatomic particle that has no charge. Electron is the negatively charged subatomic particle. The number of electrons is equal to the number of protons in a neutral atom.
An atom is written as , where A is the atomic mass or mass number, Z is the atomic number, and X is the letter symbol of the element.
The total positive charge is known as the atomic number. It is represented by Z and is also equal to the number of protons present in the nucleus of the atom.
Atomic mass is the total number of nucleons within the atomic nucleus. It is also known as the mass number. Protons and neutrons together are known as nucleons because these are located in the nucleus of the atom. So atomic mass is the sum of number of protons and neutrons in the nucleus of an atom. Hence option (B) is correct.
Learn more:
1. Component of John Dalton’s atomic theory: brainly.com/question/2357175
2. Basis of investigation for the scientists: brainly.com/question/158048
Answer details:
Grade: Senior School
Subject: Chemistry
Chapter: Atomic structure
Keywords: electron, proton, neutron, atom, atomic mass, mass number, atomic number, A, X, Z, letter symbol, nucleons.
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