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The atomic number of an atom tells you how many protons are present in the nucleus. So there are 50 in the element.

By the way, an element with 50 protons and 70 neutrons (120-50) is a stable form of Tin.

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13y ago
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12y ago

An atom with the atomic number 40 and mass of 80 would have both 40 protons and 40 neutrons, since they each make up for half of the mass. Electrons have hardly any mass, so they are usually counted as .01 (80.8).

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14y ago

there were 48 protons and electrons,72 neutrons

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8y ago

There are 48 protons and 48 electrons. It has 72 neutrons.

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12y ago

48 protons and electrons and 72 nuetrons

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10y ago

48 protons and electrons and 78 neutrons

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Anonymous

Lvl 1
3y ago

Tin

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Q: What is the correct number of subatomic particles in an atom of an element with atomic number 48 and mass number 120?
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Related questions

The atomic mass of an element is the weight of what subatomic particles?

The protons and neutrons.


For the element with atomic number 36 how many of each of the three subatomic particles are contained in this element the atomic mass of this element is 83.798amu?

The atomic number is 5becuse it is in the nuclise


What aspect of an atom's subatomic particles defines which element it is?

The number of protons determines the element, and is the same as its atomic number.


How do chemical reactions proceed?

Atomic, and subatomic particles go to different atomic, and subatomic particles.


What is the number of subatomic particles of protons?

The number of protons is equal to the atomic number of a chemical element.


The atomic number for an element is the total number of subatomic particles?

False; the atomic number is the total number if protons in the nucleus only.


Who is model of the atom has no subatomic particles?

Both Democritus' and John Dalton's atomic models had no subatomic particles.


Which subatomic particles have mass and re included in the calculation of the atomic mass number?

These particles are protons and neutrons; but to be correct the mass of electrons must be added.


What two subatomic particles match the atomic number on the periodic table?

The two subatomic particles are protons and electrons. They match the atomic number on periodic table.


What is the subatomic particle and the calculation derived from it that is not found in the periodic table?

Subatomic particles are protons, neutrons and electrons; the number of protons and electrons (in the neutral state) are equal to the atomic number of an element.


What is a subatomic particle that is part of a structure of the atomic nucleus?

Atomic nuclei have two kinds of subatomic particles, which are protons and neutrons.


Relation between subatomic particles and atomic mass unit?

protons and neutrons are subatomic particles and adding the two amounts together gives you the atomic mass unit