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When a parent radioactive nucleus splits by ejecting an alpha particle the remaining nucleus has what left?
Wiki User
∙ 13y ago
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
Wiki User
∙ 12y ago
Wiki User
∙ 12y agoIn 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
Wiki User
∙ 13y agoThe nucleus of an atom is made up primarily of neutrons and protons. The number of protons determines the element, and the number of protons and neutrons combined is used to represent the isotope.
An alpha particle contains two protons and two neutrons. When an alpha particle is ejected, the number of protons in the atom that ejects it is reduced by two, changing the element, and the mass number, the number of the isotope, is reduced by four.
For example, when 238U (atomic number 92) emits an alpha particle, the resulting atom is 234Th (atomic number 90).
Originally, the uranium atom had 92 protons and 136 neutrons. After two protons and two neutrons are ejected, the thorium atom is left with 90 protons and 134 neutrons.
Wiki User
∙ 13y agoThe daughter nucleus will have one more proton than parent atom, but same mass number.
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What happens to a radioactive nucleus when it emits gamma ray?
It's atomic number decreases by 2 (because it has lost two protons) but as an alpha particle is two protons and two neutrons the Atomic Mass decreases by 4.
What represents a beta particle?
0/-1 e
The particle NOT found in the nucleus of the atom is what?
The particle not found in the nucleus is the electron
What is a type of radioactive decay that involves emission from the nucleus of a high speed antimatter particle that is a counterpart of the electron?
This is beta decay, specifically beta plus decay. The beta particle that appears is the positron, which is the antimatter particle of the electron. Links can be found below for more information.
Is a nucleus a particle?
No, the nucleus itself is not a particle. It is made up of protons and neutrons, which are subatomic particles.
When a parent radioactive nuleus splits by ejecting an alpha particle two protons and two neutrons the remaining nucles has the origival nucleus?
Yes it does
What happens to a radioactive nucleus when it emits alpha particle and What happens to a radioactive nucleus when it emits alpha particle?
dude..
What radioactive particle is the size of a helium nucleus?
alpha particle
Nucleus of the chemical element atomic number 2 emitted by some radioactive substances?
alpha particle, He nucleus
What happens to a radioactive nucleus when it emits is gamma particle?
it becomes stable.
An alpha particle has the same structure as which nucleus?
The radioactive alpha particle has the same structure as the atomic nucleus of helium. They are usually formed and emitted during alpha decay.
A high-speed electron ejected from a nucleus durng radioactive decay is called a?
an alpha particle
A beta particle is formed in the nucleus of an isotope due to the?
Radioactive decay; beta decay is a type of radioactive decay in which a beta particle (an electron or a positron) is emitted
Which particle is emitted from a hydrogen-3 nucleus when it undergoes radioactive decay?
beta, aka an electron.
If a radioactive nucleus with an atomic number of 88 emits an alpha particle what will the atomic number of the new nucleus be?
Two less, since the alpha particle takes away two protons.
Is an alpha particle radioactive?
An alpha particle itself is not radioactive, but it is the result of a type of radioactive decay called (obviously) alpha decay. The alpha particle is actually a helium-4 nucleus, and it will eventually pick up a pair of electrons and become an atom of that inert or noble gas.
What part of an atom causes radioactivity?
It is the nucleus of the atom that undergoes change during radioactive decay.
