what is the number of protons plus neutrons?
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The number of protons is the atomic number, and the number of protons plus neutrons is the atomic mass. For hydrogen, the atomic mass is 1 because there is one proton and no neutrons.
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We write 80Br . Because the superscripted mass number is equal to the SUM of nuclear protons and neutrons, the number of neutrons is equal to 80−Z=80−35=45 neutrons..........
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Problem: The total numbers of neutrons, protons, and electrons in 27Al3+ are: A. 14 neutrons, 13 protons, 13 electrons B. 35 neutrons, 17 protons, 18 electrons C.
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We know that the atomic number of sodium is 11. This tells us that sodium has 11 protons and because it is neutral it has 11 electrons. The mass number of an element tells us the number of protons AND neutrons in an atom (the two particles that have a measurable mass).
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Each atom, therefore, can be assigned both an atomic number (the number of protons equals the number of electrons) and an atomic weight (approximately equaling the number of protons plus the number of neutrons).
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Atomic number and mass number The total number of protons and neutrons in an atom is called its mass number.
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If the atomic number of nickel is 28 then every atom of nickel has 28 protons in its nucleus and 28 electrons outside the nucleus. The mass number is a sum. It is the number of protons + the number of neutrons together in the nucleus.
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Si-28– Protons: 14 (atomic number)Neutrons: (mass number-atomic number) 28-14= 14Electrons: 14Si-29- Protons: 14Neutrons: (mass number-atomic number) 29-14= 15Electrons: 14Si-30- Protons: 14Neutrons: (mass number-atomic number) 30-14= 16Electrons: 14 3.
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This tells you that potassium has 19 protons and - since the number of protons is the same as the number of electrons- also 19 electrons. To find out the number of neutrons you have to look at the atomic mass or weight of the element.
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How many electrons are present in A+ ion having eleven protons? A.
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The number of protons, neutrons, and electrons in an atom can be determined from a set of simple rules. The number of protons in the nucleus of the atom is equal to the atomic number (Z). The number of electrons in a neutral atom is equal to the number of protons.
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Answer is: Protons and neutrons are located in the nucleus. Atomic number (Z) is total number of protons and mass number (A) is total number of protons and neutrons in a nucleus.
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The atomic number of uranium (see periodic table) is 92, and the mass number of the isotope is given as 238. Therefore, it has 92 protons, 92 electrons, and 238 — 92 : 146 neutrons.
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How many protons, electrons and neutrons make up an atom of bromine-80? 35 protons, 35 electrons, 45 neutrons. The number of protons in the nucleus of the atom of that element.
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Answer and Explanation: The approximate atomic mass of an atom with 16 neutrons, 15 protons, and 15 electrons would be 31.
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The mass number of an atom is equal to the number of protons plus the number of neutrons that it contains. In other words, the number of neutrons in any atom is its mass number minus its atomic number.
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The atomic number is the number of protons in an element, while the mass number is the number of protons plus the number of neutrons.