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Number protons + number neutrons is called the mass number or the atomic mass.
Wiki User
∙ 15y ago
Wiki User
∙ 12y agoWhen you add the number of protons and number of neutrons, mostly the answer is the Atomic Mass.
Wiki User
∙ 7y agoThe total number of proton plus the total number of neutrons equals the atomic mass of the element.
Wiki User
∙ 11y agoThe atomic mass.
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Is the mass number the number of protons and neutrons?
No, The atomic mass is the number of protons plus the number of neutrons (the mass of the atom's nucleus). Note that the atomic mass is therefore different in cases where there are different isotopes of the element (because the nucleus will have a different number of neutrons for each isotope). The atomic number is the number of protons (or electrons in the atom's neutral state).
The mass number of an element is equal to the total number of?
The mass number is the average atomic mass of all the isotopes that are found in nature.
What is the sum of protons and neutrons known as an element?
Sum of protons and neutrons is the Mass number of the element. The number of protons is equal to the number of electrons. Neutrons and protons are sub atomic particles.
The mass number of an atom indicates the number of what?
The mass number is the sum of protons + neutrons.
How many neutrons are in magnesium 25?
25 is the number of protons and neutrons added together. The atomic number of Mg is 12 which is the number of protons. So 25 - 12 = 13 neutrons.
What is the answer to combined number of protons and neutrons in a nucleus?
Mass number
The number of protons and neutrons in an atom?
Depends on the atom. The atomic number will give you the number of protons. The atomic weight will give you approximately the number of protons and neutrons combined.
What number represents the number of protons in an atom?
Protons are represented by the atomic number of an element. The number of protons is also the number of electrons. The number of protons is also represented in re Atomic Mass, which is the number of protons and the number of neutrons combined.
Has 114 neutrons within its nucleus?
Osmium, if you take the Atomic Mass (190.2) and subtract the Atomic number (76), you get the result of 114, this is the number of protons, not the protons and neutrons combined.
The atomic mass of an atom is determined by the combined masses of its what?
The total number of protons plus the total number of neutrons
What is the mass number of an isotopes that has 5 protons 6 neutrons and selectrons?
The atomic number is the number of protons. The atomic mass number is the the sum of the numbers of neutrons and protons combined, in this instance, 11.
What can you find with the atomic number and mass number?
atomic number is the number of protons in the atom. mass number is protons and neutrons combined.
If beryllium has an atomic number of 4 and an atomic mass of approximately how many neutrons does beryllium atom have?
Since the mass number is protons plus neutrons, it would have 5 neutrons.
What do protons neutrons ans electrons create of combined?
protons, neutrons, and electrons make up atoms.
How is the mass number determine?
the mass number is determined on the number of protons and neutrons in the nucleus of the atom.
What are the atomic number and mass number if the number of electron in an element oxygen is 8 and the number of neutrons is 9?
The atomic number is 8 (the number of protons, which for oxygen is equal to the number of electrons) and the mass number is 17 (the combined number of protons and neutrons).
Which trem describes the sum of the number of protons and neutrons in an atom?
"Atomic mass" is the sum of the number of protons and neutrons in the nucleus of the atom. All atoms of an element have the same number of protons. For example, all iron atoms have 26 protons. But while most (90%) have 30 neutrons, there are isotopes of iron that have anywhere from 26 to 36 neutrons. So the published "atomic mass" is the weighted average of the combined number of protons and neutrons. That's why the atomic number is always a whole number, but the atomic mass is a decimal.
