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The mass number is going to be 54. Mass number is found by adding the number of protons and the number of neutrons. The fact that there are 24 electrons, one for each proton, means the atom is neutral.
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∙ 15y ago
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∙ 12y agoIt's Atomic Mass is 56 (and some change) because the majority of the mass comes from the protons and neutrons which equal about 1 amu (atomic mass unit) while the electrons equal a fraction of a percent so just add up the protons and electrons to get the atomic mass henceforth the mass number
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∙ 14y agoThe mass number of an atom is the sum of its numbers of protons and neutrons, in this instance 56.
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∙ 9y agoIron is a metal element. Mass number of it is 56.
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∙ 13y agoAtomic Number 18
Mass Number 38
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∙ 14y ago52
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∙ 13y ago56
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What are the number of protons and neutrons in the following Mg with atomic mass of 26?
12 protons 14 neutrons
What dose Fe has 26 protons how many neutrons or electrons dose it have?
Iron has 26 electrons; the number of neutrons is different for each isotope (number of neutrons = mass number - 26).
An atom of Iron has 26 protons 30 nuetrons and 23 electrons what is its atomic number and mass?
protons 26 electrons 26 neutrons Iron will have 26 electrons 26 protons (they are = because the atom is neutral) and it will have 30 neutrons (because protons + neutrons= your atomic weight) electrons have virtually no mass If the iron atom had a +2 charge there would be two less electrons than protons. 26 protons 24 electrons 30 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.
How many neutrons would be in the nucleus of an atom of iron-56?
The number of protons in an atom will always be the same with any atom of the same element. The number of protons is an elements defining characteristic; a different number of protons will produce a different element. So it is not necessary to know the specific isotope (which is given by the mass number), because all atoms, ions, and isotopes of iron will all have 26 protons, the same as the atomic number.
What is the mass number of an iron isotope with 26 protons 31 neutrons ans 24 electrons?
Number of protons + neutrons = mass number 26 protons + 31 neutrons 57
What are the number of protons and neutrons in the following Mg with atomic mass of 26?
12 protons 14 neutrons
What is the mass of an atom with 13 protons and 14 neutrons?
26 is the atomic mass because the number of protons and neutrons together = atomic mass
What is the mass number of a magnesium atom with 14 neutrons?
The mass number is the number of protons plus neutrons. Magnesium is element number 12, so it has 12 protons. Its mass number with 14 neutrons is 12 + 14 which is 26.
How many neutrons and protons are in Magnesium 26?
Manesium 24 has 12 electrons, protons and neutrons.
What is the mass number for Fe?
The number of Neutrons and Protons in the nucleus.So it would be 26 Protons and 30 Neutrons so...26+30=56<so that is the mass number.
How many protons electrons and neutrons are there in a iron atom?
26 protons, 26 electrons in iron. Fe-56, the most stable isotope of iron, has 30 neutrons
What does 26 protons and 30 neutrons equal?
A mass number of 56.
What dose Fe has 26 protons how many neutrons or electrons dose it have?
Iron has 26 electrons; the number of neutrons is different for each isotope (number of neutrons = mass number - 26).
What is the approximate mass of a neutral atom with 31 electrons and 38 neutrons?
From the periodic table, the atomic number of iron (Fe) is 26. This means that iron atoms have 26 protons in their nuclei. Mass number is the number of protons and neutrons in the nucleus of an isotope of an element. So, for your example of 31 neutrons, the sum of the number of protons (26) and neutrons (31) is 57. So the mass number of this iron atom is 57.
What is the mass number of an iron atom that has neutrons?
Mass number (of an isotope) is number of neutrons PLUS number of protons (this equals the atom number, which is 26 for element Fe) , so 28 + 26 = 54 is the mass number
An isotope of iron has 26 protons and 32 neutrons what is the mass number?
An unknown element contains 24 protons, 21 electrons,and has mass number 54
