Proton and Neutron
OK, in very very round figures, but the neutron actually is more massive.
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.
An alpha particle is a positively charged nuclear particle consisting of two protons bound to two neutrons. The atomic number of an atom decreases by 2 and the mass number decreases by approximately 4 when an alpha particle is ejected.
Virtually all of the mass of an atom is carried by the proton and the neutron. The electron has very, very little mass relative to these two particles.
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.
An alpha particle is composed of two protons and two neutrons, so when an atom loses an alpha particle, its mass number decreases by four. However, since the atom loses two protons, it is now a different element. It is now the element with an atomic number minus the two protons.
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.
Protons and neutrons.
The nucleus of a helium atom is called an alpha particle. The electromagnetic waves emitted by a nucleus are called gamma rays.
An alpha particle is a positively charged nuclear particle consisting of two protons bound to two neutrons. The atomic number of an atom decreases by 2 and the mass number decreases by approximately 4 when an alpha particle is ejected.
Virtually all of the mass of an atom is carried by the proton and the neutron. The electron has very, very little mass relative to these two particles.
an alpha particle is made of two protons and 2 neutrons. its basically the same as the nucleus of a helium atom
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.
Proton and neutron.
ISotopes
An alpha particle is composed of two protons and two neutrons, so when an atom loses an alpha particle, its mass number decreases by four. However, since the atom loses two protons, it is now a different element. It is now the element with an atomic number minus the two protons.
The element with atomic structure similar to an alpha particle is helium. An alpha particle consists of two protons and two neutrons, the same as the nucleus of a helium atom.
An electron, also known in this context as a beta particle.