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An atom of atomic number 12and mass number 22 contains how many protons?

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14y ago
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13y ago

The atomic number tells you the number of protons and electrons.

p.s. Subtract the atomic number from the Atomic Mass, and you will get neutrons.

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11y ago

Mass number is the sum of protons and neutrons, so the mass number of an atom that has 12 neutrons and 11 protons has a mass number of 23.

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Q: What is a mass number of an atom that has 12 netrons and 11 protones?
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What indicates the total number of protons and neutrons in an atom?

The mass number of an isotope indicates the total number (the sum) of protons and netrons in an atom.The number of protons is determined by the atomic number.The number of neutrons can be found by subtracting the atomic number from the mass number.


What are listed on the periodic table?

The atoms as a perspective of the number of protones in the nuclea. Also the mass of the nuclea is written, as an AMU (atomic mass units).


Is atomic number the same as mass number?

Atomic number is the number of protons in the atom; atom mass is the total mass of the atom (usually neglecting the mass of the electrons because they have so little).


Why atomic mass is different from the mass numbers?

atomic mass is the number of protons in an atom mass number is the number of protons plus neutrons in an atom


How do you you find the mass number of an atom?

We can find atomic mass and mass number in chemical elements. Atomic mass is about weight of the atom. Mass number is about total of neutrons and protons.

Related questions

What are the differences between the atomic number and the mass number of an atom?

atomic no is the no of protones in a nucleus while atomic mass is the sum of protons and neutrons in nucleus of an atom....


How the protones of atoms are together in nucleus?

depends on the proton number of the atom, for nitrogen it's 7 so there are 7. The mass number is the number of protons and neutrons so if you subtract the proton number you get the number of neutrons too


What indicates the total number of protons and neutrons in an atom?

The mass number of an isotope indicates the total number (the sum) of protons and netrons in an atom.The number of protons is determined by the atomic number.The number of neutrons can be found by subtracting the atomic number from the mass number.


How many netrons are in a nitrogen atom?

In a nitrogen-14 atom, there are 7 neutrons, where the isotopes with mass numbers with 13 and 15, have 6 and 8 neutrons respectively.


What are listed on the periodic table?

The atoms as a perspective of the number of protones in the nuclea. Also the mass of the nuclea is written, as an AMU (atomic mass units).


What is the mass number of a atom?

the mass number is number of protons in an atom, plus the number of neutrons.


What do you get when you change the mass number of an atom?

You can't change the mass number of an atom because the mass number is the number of protons which is the atom's atomic number I hope this helped :)


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.


Is atomic number the same as mass number?

Atomic number is the number of protons in the atom; atom mass is the total mass of the atom (usually neglecting the mass of the electrons because they have so little).


What does the mass number of an atom tell you about the atom?

The mass number tells us the number (the sum) of protons and neutrons in the nucleus of an atom.


What do you get if you subtract the atomic number from the mass number for a particular atom?

mass no - atomic no = number of neutrons in an atom.


Why atomic mass is different from the mass numbers?

atomic mass is the number of protons in an atom mass number is the number of protons plus neutrons in an atom