Why is mass of alpha paeticle not equal to masses of two neutron and proton?
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The mass of a proton is approximately 1.67*10^-27 kilograms. ItsIts charge is approximately 1.602*10^-19 Coulombs.
An alpha particle is made up of 2 protons and 2 neutrons, which have no charge, hence its charge is equal to that of 2 protons. The mass of the particle its approximately the sum of the masses of the neutrons and of the protons: 6.6446572×10^−27 kg
The “approximately” is especially important…. the sum of the masses of two protons and two neutron.....
Since the alpha particle is nothing but positively charged helium nuclei, it has charge of two time of that of the proton, as it is constituted of 2 protons.The rest mass of the alpha particle amounts to 6.64424·10-27 kg, or 3.7273·109 eV, which is almost 4 times of that of proton. You can think it easily considering a positively charged helium nuclei. Now it is obvious that the positively charged He nuclei has 2 protons and 2 neutrons. Now it is known that the mass of proton is e(approx. 1.67×10^-27 kg). Since helium nuclei is consisted of 2 protons and 2 neutrons the mass of it is 6.64×10^-27 kg. Besides we also know that the charge of proton is approx. 1.602×10^-19 C. Hence multiply it by 2 and you will get your answer approx. 3.34×10^-27 C.
Proton’s charge is +1e ie 1.602×(10^-19) Coloumb and its mass is 1 a.m.u or 1.6727 x (10^-27) kg
Alpha particle consists of two neutrons and two protons, and is thus identical to the nucleus of a helium atom. The rest mass of the alpha particle amounts to 4 a.m.u which equals to about 6.644×10^-27 kg and its charge is +2e ie twice of a proton.
OR
The charge of proton is same as electron with opposite sign. As proton is denoted as p+ hence it is having a positive sign. It is equal to +e which is approximately equal to 1.602*10^−19−19 C. C denotes coulomb as charge is measured in coulombs. Mass of proton is 1.6*10^−24−24grams.
A proton is same as H+ (hydrogen cation) which means that if we remove all the electrons of Hydrogen( there is only 1) then it will become a Hydrogen cation which is same as proton. Similarly when Helium atoms lose all the electrons it becomes an alpha particle. So an alpha particle is denoted as He2+2+.This means that alpha particle is having a charge of +2e (double that of a proton) but it has four times that mass of proton as it has two neutrons also (they are neutral).
HOPE THIS WILL HLP U ......
An alpha particle is made up of 2 protons and 2 neutrons, which have no charge, hence its charge is equal to that of 2 protons. The mass of the particle its approximately the sum of the masses of the neutrons and of the protons: 6.6446572×10^−27 kg
The “approximately” is especially important…. the sum of the masses of two protons and two neutron.....
Since the alpha particle is nothing but positively charged helium nuclei, it has charge of two time of that of the proton, as it is constituted of 2 protons.The rest mass of the alpha particle amounts to 6.64424·10-27 kg, or 3.7273·109 eV, which is almost 4 times of that of proton. You can think it easily considering a positively charged helium nuclei. Now it is obvious that the positively charged He nuclei has 2 protons and 2 neutrons. Now it is known that the mass of proton is e(approx. 1.67×10^-27 kg). Since helium nuclei is consisted of 2 protons and 2 neutrons the mass of it is 6.64×10^-27 kg. Besides we also know that the charge of proton is approx. 1.602×10^-19 C. Hence multiply it by 2 and you will get your answer approx. 3.34×10^-27 C.
Proton’s charge is +1e ie 1.602×(10^-19) Coloumb and its mass is 1 a.m.u or 1.6727 x (10^-27) kg
Alpha particle consists of two neutrons and two protons, and is thus identical to the nucleus of a helium atom. The rest mass of the alpha particle amounts to 4 a.m.u which equals to about 6.644×10^-27 kg and its charge is +2e ie twice of a proton.
OR
The charge of proton is same as electron with opposite sign. As proton is denoted as p+ hence it is having a positive sign. It is equal to +e which is approximately equal to 1.602*10^−19−19 C. C denotes coulomb as charge is measured in coulombs. Mass of proton is 1.6*10^−24−24grams.
A proton is same as H+ (hydrogen cation) which means that if we remove all the electrons of Hydrogen( there is only 1) then it will become a Hydrogen cation which is same as proton. Similarly when Helium atoms lose all the electrons it becomes an alpha particle. So an alpha particle is denoted as He2+2+.This means that alpha particle is having a charge of +2e (double that of a proton) but it has four times that mass of proton as it has two neutrons also (they are neutral).
HOPE THIS WILL HLP U ......
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