Which statement is part of Bohr's atomic model? Electrons absorb or emit light when they change energy levels.
Electrons with the highest energy are found with orbits of the smallest radius.
Electrons exist as waves and clouds of probability with specific orbits and shapes.
Electrons orbit the nucleus in narrow ellipses, like how the planets orbit the Sun. Which excited electron has the lowest energy?

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The answer is bhope this

Answer : option a) 84explanation :

considering the question as per the attachment

here we can see that the radon nuclide has 222 as the atomic mass number and 86 as the atomic number.

when it undergoes nuclear fission it gives polonium which has atomic mass number as 218 and atomic number will be 84 along with a helium nucleus which has 4 atomic mass number and 2 as its atomic number.

222 = 218 + 4 (atomic mass number)

86 = ? + 2; therefore ? = 86-2 = 84.

the atomic mass number of polonium will be 84.

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