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The mass number of an atom is the sum of protons and neutrons in the nucleus. In this case, the atom has 11 protons and 12 neutrons, so its mass number would be 11 + 12 = 23.
Sodium is a metal element. Mass number of it is 23.
The mass number of an atom is the total number of protons and neutrons in its nucleus. Therefore, the mass number of boron with 5 protons and 6 neutrons is 11.
The mass number of an atom is the sum of its protons and neutrons. In this case, sodium has 11 protons and 12 neutrons, so the mass number is 11 + 12 = 23.
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 protons and neutrons in the nucleus. In this case, the atom has 11 protons and 12 neutrons, so its mass number would be 11 + 12 = 23.
The mass number of an atom is the sum of its protons and neutrons. In this case, the mass number of the sodium atom with 11 protons and 12 neutrons would be 23.
The atomic number of an atom is the number of protons it has, so in this case, the atom of sodium has an atomic number of 11. The mass number of an atom is the sum of its protons and neutrons, so the mass number of this sodium atom is 23 (11 protons + 12 neutrons).
Sodium is a metal element. Mass number of it is 23.
How many neutrons would it have if it had 11 neutrons? 11.
Its atomic number is 11 and its mass is 22.99. This atom is a sodium atom.
The mass number of an atom is the total number of protons and neutrons in its nucleus. Therefore, the mass number of boron with 5 protons and 6 neutrons is 11.
The mass number of an atom is the sum of its protons and neutrons. In this case, sodium has 11 protons and 12 neutrons, so the mass number is 11 + 12 = 23.
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 the number of protons and neutrons in the nucleus. In this case, the atom has 11 protons and 12 neutrons, so the mass number would be 11 + 12 = 23.
The mass number of this atom is (10 + 11 =) 21.Remember:Mass number is the sum of (the number of) neutrons (= 11) and protons.Atomic number is equal to the number of protons (= 10)This atom is the least abundant isotope of neon, 2110Ne (< 0.3%)
Carbon's atomic number is 6, therefore it has 6 protons in its atoms. Mass number is the sum of protons and neutrons in the nucleus, which is 6 + 5 = 11.