In order to answer this, the number of neutrons must also be known. Subtract the number of neutrons from the mass number and the result is the atomic number.
mass no. - no. of neutrons = atomic number (no. of protons)
To determine the atomic number of an unknown element with a mass number of 22, you would need to know the number of protons in the nucleus of the element. Since the mass number is the sum of protons and neutrons, subtracting the number of neutrons from the mass number would give you the atomic number. This is because the atomic number represents the number of protons in an element's nucleus.
The atomic number of an element is determined by the number of protons.
To determine the atomic number of an element with a mass number of 22, you would need the number of protons in the nucleus. Since the mass number is the sum of protons and neutrons, subtracting the number of neutrons (mass number) from the mass number gives you the number of protons (atomic number).
The identity of the element is determined solely by the atomic number, which is the number of protons.
the only element with a mass number of 22 is sodium (Na) which has an atomic number of 11. This is because the atomic number only represents the number of protons in the nucleus, while the mass number represents the number of protons and neutrons in the nucleus.
To determine the number of electrons in an element, you can look at the atomic number of the element on the periodic table. The atomic number represents the number of protons in the nucleus of an atom, which is equal to the number of electrons in a neutral atom.
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To determine the number of electrons in an element, you can look at the element's atomic number on the periodic table. The atomic number represents the number of protons in the nucleus of an atom, which is equal to the number of electrons in a neutral atom.
The atomic number is the same as the number of protons.
subtract the atomic number from the mass number
The atomic number is equal to the number of protons.
The number of protons is the "atomic number", so you look that up in the periodic table.