The mass number of an atom is the sum of its protons and neutrons. In this case, if a silicon atom contains 14 protons (since it is a silicon atom) and 16 neutrons, the mass number would be 14 + 16 = 30.
The mass number is calculated by adding together the number of protons and neutrons in an atom. A sulfur atom typically has 16 protons, so if it contains 31 neutrons, the mass number would be 16 (protons) + 31 (neutrons) = 47.
The mass number of an atom is the sum of its protons and neutrons. In this case, the atom has 70 protons and 99 neutrons, so the mass number would be 70 + 99 = 169.
The mass number of an atom is the sum of its protons and neutrons. Since sulfur has 16 protons (its atomic number) and 19 neutrons, the mass number of a sulfur atom with 19 neutrons would be 16 + 19 = 35.
The atomic mass number of an atom is the sum of its protons and neutrons. Sodium typically has 11 protons, so if the atom has 12 neutrons, the atomic mass number would be 23 (11 protons + 12 neutrons).
The mass number of an atom is the sum of its protons and neutrons. In this case, if a silicon atom contains 14 protons (since it is a silicon atom) and 16 neutrons, the mass number would be 14 + 16 = 30.
If the atomic mass of the atom is 48 and it contains 20 protons, then the atom contains 28 neutrons. This can be calculated by subtracting the number of protons from the atomic mass, since the atomic mass includes both protons and neutrons.
The nucleus contains the mass.
The mass number is 26. This is the isotope silicon-26 with the atomic number 14.
The mass number is calculated by adding together the number of protons and neutrons in an atom. A sulfur atom typically has 16 protons, so if it contains 31 neutrons, the mass number would be 16 (protons) + 31 (neutrons) = 47.
the mass of an atom of a chemical element expressed in atomic mass units. It is approximately equivalent to the number of protons and neutrons in the atom (the mass number) or to the average number allowing for the relative abundances of different isotopes.
The mass number of an atom is the sum of its protons and neutrons. In this case, the atom has 70 protons and 99 neutrons, so the mass number would be 70 + 99 = 169.
An atom of atomic number 12and mass number 22 contains how many protons?
The nucleus, made up of protons and neutrons, contains most of an atom's mass.
The number of protons in the nucleus determines the element's identity, while the sum of protons and neutrons gives the atom's mass number. The nucleus contains nearly all of an atom's mass and is surrounded by a cloud of electrons.
The mass number of an atom is the sum of its protons and neutrons. Since sulfur has 16 protons (its atomic number) and 19 neutrons, the mass number of a sulfur atom with 19 neutrons would be 16 + 19 = 35.
The atomic mass number of an atom is the sum of its protons and neutrons. Sodium typically has 11 protons, so if the atom has 12 neutrons, the atomic mass number would be 23 (11 protons + 12 neutrons).