ICSE Class 10 Answered
sir in one of your video lectures in chapter radioactivity of alpha radiation you gave the value of alpha as 2 protons and 2 neutrons how can one tell the constituents of a paticle?
Asked by ayush421301 | 29 May, 2019, 11:08: PM
Expert Answer
Alpha particle or alpha rays is not but a helium atom. The mass number of helium atom is 4 i.e. Mass number (A) = 4 and number of protons (Z) are 2.
Thus number of neutrons in the alpha particle (He atom) is A - Z = 4 -2 = 2
Thus, it is said that in alpha particle number of protons are 2 and number of neutrons are 2.
Answered by Shiwani Sawant | 30 May, 2019, 01:02: PM
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