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An electron. As the mass of an electron is 00000000000000000000000000000091 kg

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When a beta particle is emitted does the mass number of the isotope remains unchanged?

With the ejection of a beta particle (electron), there is a minute loss of mass. Electrons have very low mass. The atomic number increases though as a neutron is transformed into a proton. A antineutrino is also ejected. In a similar process, positron emission also called beta decay,- a positron is emitted and a proton is transformed into a neutron, the atomic number decreases. A neutrino is also ejected.


What is the mass of a alpha particle given a nuclear equation?

The mass of an alpha particle is approximately 4 atomic mass units (AMU), which is equivalent to 4 times the mass of a proton. In a nuclear equation, an alpha particle is represented as ( ^4_2 \text{He} ), indicating a mass number of 4 and an atomic number of 2.


How do the mass and size of an alpha particle compare with mass and size of beta particle?

The mass and size of an alpha particle compare with the masa and size of beta particle in the sense that the alpha particle is significantly larger in both size and mass that the beta and gamma particles. This is why it is called the alpha particle.


What particle determines the mass along with the protons of an atom?

Neutrons are the particles that contribute to the mass of an atom, along with protons. Neutrons have a similar mass to protons, but they do not have a charge. The number of protons and neutrons in an atom's nucleus determines its atomic mass.


How can you figure out how many of each subatomic particle is in a atom has?

To determine the number of each subatomic particle in an atom, you need to know the atom's atomic number and mass number. The atomic number tells you the number of protons, while the mass number gives you the total number of protons and neutrons combined. Subtract the atomic number from the mass number to find the number of neutrons. Electrons will equal the number of protons in a neutral atom.

Related Questions

What subatomic particle has the lowest masses?

If you mean subatomic particle as in protons neutrons and electrons, electrons have the lowest mass. If you are talking even smaller, leptons have extremely tiny rest masses.


How does the emission of an alpha particle change the mass number of the parent nuclide?

The mass number decrease with 4.


What is the mass number of the missing particle Co and Mn?

Manganese is a metal element. Mass number of it is 55.


Describe what happens to the proton number and the mass number when an alpha particle is emitted by a nucleus?

When an alpha particle (helium nucleus) is emitted by a nucleus, the proton number decreases by 2 and the mass number decreases by 4. This is because the alpha particle consists of two protons and two neutrons.


Can you use the atomic number and atomic mass to calculate the number of each subatomic particle?

atomic number = number of protons = number of electrons atomic mass = mass of protons + mass of neutrons


What particle consists of two protons and two neutrons it is the same as a helium nucleus release of a what particle by an atom decreases the atomic number by 2 and the mass number by 4?

The particle that consists of two protons and two neutrons, equivalent to a helium nucleus, is an alpha particle. When an atom releases an alpha particle, its atomic number decreases by 2 and its mass number decreases by 4.


How is the mass number of an element affected when it decays by ejecting an alpha partical?

The mass number of an element decreases by 4 when it decays by ejecting an alpha particle. This is because an alpha particle has a mass number of 4 and atomic number of 2. The atomic number of the element also decreases by 2.


When a beta particle is emitted does the mass number of the isotope remains unchanged?

With the ejection of a beta particle (electron), there is a minute loss of mass. Electrons have very low mass. The atomic number increases though as a neutron is transformed into a proton. A antineutrino is also ejected. In a similar process, positron emission also called beta decay,- a positron is emitted and a proton is transformed into a neutron, the atomic number decreases. A neutrino is also ejected.


What is mass number for beta?

The mass number tells the nucleòns; the elèctròn and positròn are 0.


What is the mass of a alpha particle given a nuclear equation?

The mass of an alpha particle is approximately 4 atomic mass units (AMU), which is equivalent to 4 times the mass of a proton. In a nuclear equation, an alpha particle is represented as ( ^4_2 \text{He} ), indicating a mass number of 4 and an atomic number of 2.


What is the mass number to an alpha particle and why?

Mass number is defined as the number of nucleons present in the nucleus. Alpha particle is nothing but the doubly ionized helium atom or the nucleus of helium atom. Nucleon is the common name both for proton and neutron. Helium nucleus has two protons and two neutrons. So the number of nucleons within it is 4. Hence mass number is 4.


When an atom emits a 1 beta particle what can be said about is mass number and atomic number?

Emiting a beta particle is the result of a neutron changing into a proton so the atomic number increases by 1 and the mass number stays the same