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2 protons and 2 neutrons. An alpha particle is the same as a helium nucleus.

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Q: The number of protons plus neutrons in an alpha particle?
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Does alpha decay always decreases the number of protons by an even number?

Yes, an alpha radiation particle is 2 protons and 2 neutrons so for every alpha particle emitted the radioactive nuclide loses 2 protons.


The radioactive particle that is positively charged and has two protons and two neutrons is the?

An alpha particle consists of two protons and two neutrons.


What is a radioactive particle that is made up of two neutrons and two protons?

Used by Rutherford in his experiment made of two protons and two neutrons are alpha particles. Rutherford discovered the nucleus using his gold foil experiment.


When a parent radioactive nucleus splits by ejecting an alpha particle the remaining nucleus has what left?

two protons and two neutrons less than the original nucleus.* A lower atomic mass (-4)* A lower atomic number (-2)In alpha decay, an alpha particle (helium nucleus) is given off.An alpha particle consists of 2 protons and 2 neutrons. THus the atom loses 2 protons and 2 neutrons. Proton number endows the identity of the element. The daughter nucleus is thus of a different element to the parent nucleus. It also has 2 fewer protons. Radium can decay by alpha emission, losing 2 protons from the original 88, leaving a nucleus of Radon with 86 protons.Neutrons and protons summed give the mass number of the atom. SInce an alpha-decayed nucleus loses a sum of 4 particles (protons and neutrons) the mass number goes down by 4.NovaNET answer: 2 protons and 2 neutrons less


Which subatomic particle is present in the nucleus of an atom?

The atomic particles that make up an alpha are two protons and two neutrons. The subatomic particles are contained within the neutrons & protons and there are too many to list here, plus I don't know all of them.

Related questions

What neutrons are in an alpha particle?

A nucleon is the amount of protons and neutrons. An alpha particle has an atomic number of 2 and a atomic mass of 4 then it has 2 protons and 2 neutrons.There are 4 nucleons in an alpha particle.


What element has the same number of protons and neutrons in its nucleus as an alpha particle?

An alpha particle has 2 protons and 2 neutrons. That is the same as a helium nucleus.


What is the change in the atomic number when the atom emits an alpha particle?

The atomic number will decrease by 2, the number of protons in the emitted alpha particle. An alpha particle is a helium-4 nuclei with two protons and two neutrons.


Does alpha decay always decreases the number of protons by an even number?

Yes, an alpha radiation particle is 2 protons and 2 neutrons so for every alpha particle emitted the radioactive nuclide loses 2 protons.


Which is an alpha particle?

A helium nucleus (2 protons & 2 neutrons).


Which particle is composed of 2 neutrons and 2 protons?

An alpha particle.


What alpha radiation is made up of?

A particle of alpha radiation is made up of two protons and two neutrons resembling a Helium-4 nucleus.


The radioactive particle that is positively charged and has two protons and two neutrons is the?

An alpha particle consists of two protons and two neutrons.


Why is alpha is a positive charged particle?

An alpha particle is a helium-4 nucleus - in other words, two protons + 2 neutrons. The protons have a positive charge, the neutrons are neutral.


Is it true that an alpha particle consists of two protons and neutrons?

Yes it is. an alpha particle can be represented as 2He4


Which atoms are in an alpha particle?

An alpha particle is two protons and two neutrons, this is the same as a helium nucleus.


What is a radioactive particle that is made up of two neutrons and two protons?

Used by Rutherford in his experiment made of two protons and two neutrons are alpha particles. Rutherford discovered the nucleus using his gold foil experiment.