Brainliest will be given! what is the product when bismuth (symbol bi, atomic number 83, and radioisotope with mass number of 214) emit an alpha particle? give the name (or symbol) of the new element, its atomic number, and its mass.

Answer : The correct answer is Name = Thallium (Th) , atomic mass = 210 and atomic number = 81 .

Alpha decay :

When atomic nucleus emits an alpha particle that process is known as alpha particle decay . The symbol of alpha particle is . where 4 is atomic mass ( 2 protons + 2 neutrons ) and 2 atomic number .

When alpha particle is released the resultant nuclei (daughter nuclei) have 4 less atomic mass and 2 less atomic number .

Example for nuclear equation of alpha decay can be expressed as:

Given :

Radioisotope = Bi Atomic mass = 214 Atomic number = 83

When it will release alpha particle , atomic mass will be decreased by 4 and atomic number by 2 .

Atomic mass = 214 - 4 = 210 Atomic number = 83-2 = 81

The atom with atomic number 81 is Thallium (Th) . Hence the daughter nuclei so produced is

The nuclear reaction can be written as :

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