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An atom of aluminum (Al) has an atomic number of 13 and a mass number of 27. How many neutrons does it have?
Wiki User
∙ 6y ago
an element always has as many electrons as protons......
the Atomic Number equals the number of protons.
So if your atomic number is 13......you have thirteen protons.....and therefore 13 electrons
Wiki User
∙ 12y ago
Anonymous
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What does the number of neutrons determine?
they determine the atomic mass of the atom
How can you determine the number of neutrons in an atom if its mass number and its atomic number are known?
It is impossible to determine the number of neutrons from the mass number and atomic mass, since the two are essentially same value. However, with the atomic number and the mass number, one can calculate the number of neutrons by subtracting the atomic number from the mass number.
What is the number of protons and neutrons called?
The number protons in an atom is called the atomic number (it is this number that tells us which element the atom is). The number of neutrons in an atom can change, but the term for the amount of neutrons is called an isotope. The number of protons and neutrons added together is called the atomic mass.
How many neutrons are there in an element having a mass number of 155 and an atomic number of 63?
The number of neutrons in the nucleus of an atom is always the difference between the mass number of the atom and the atomic number of the atom. Therefore, in this instance, there are (155 - 63) or 92 neutrons in the atom.
How do you find the number of neutrons from the mass number?
Atomic mass is the number of protons in an atom mass number is the number of protons plus neutrons in an atom the number of neutrons would equal the mass number minus the atomic number.
How can you find the number of neutrons that are in the nucleus of an atom?
Aluminum is 13 because that is the atomic number (the number of protons). The atomic mass number is the number of protons and neutrons in an atom. In this, you just subtract the number of protons from the mass number. If Aluminum (Al), #13, has a mass number of 27, then it has 14 neutrons. Pretty simple.
What is the number of neutrons in an atom affects the atomic what?
The number of neutrons in an atom can affect the atomic mass of an atom.
What does the number of neutrons determine?
they determine the atomic mass of the atom
What do you have when you subtract the atomic no from atomic mass?
Atomic number is number of protons in an atom while atomic mass is the sum of protons and neutrons in an atom when you subtract you will get the number of neutrons in an atom.
How can you figure out the number of neutrons in an atom?
You subtract the atomic number from the atomic weight. For example, if you have a helium atom and its atomic weight is 4 and you subtract its atomic number (2) the number of neutrons in the helium atom is 2.
Does the atomic number of aluminum equal to the total number of atoms in aluminum?
No, the atomic number refers to the number of protons in an atom. There are 13 protons in an aluminum atom, hence the atomic number is 13.
What is the atomic number of in atom?
atomic number is how much protons(positive atom) and neutrons(neutral atom) are there in an element. therefore an atom does not have an atomic number
How many neutrons are in one atom?
The number of neutrons depends on the atom. In general, mass number = atomic number + number of neutrons.
What are the number of protons and neutrons in aluminum?
There are 13 protons and 14 neutrons in the nucleus of an aluminum atom. The number of protons is the same as the atomic number and the number of neutrons is just the mass number - atomic number. In a stable atom anyway, there's different isotopes which is where there is a different number of neutrons, but if it doesn't specify then this is what it is.
How can you figure the numbers of neutrons in an atom?
You subtract the atomic number from the atomic weight. For example, if you have a helium atom and its atomic weight is 4 and you subtract its atomic number (2) the number of neutrons in the helium atom is 2.
What number is the atomic mass equal to?
Atomic mass is the number of protons and neutrons in an atom.
Atomic mass is determined by the number of protons plus the number of?
Atomic mass is determined by the number of protons and neutrons in an atom's nucleus.
