Heyheyhey i hope ur doing great! i need help:'')
please help mee its urgentt
..
thank uu

Both should be C, since all these process dosent effect the size of the molecules, but just effects the distances between molecules

I think it's A

Explanation:

coz wen u put water near smoke when it reaches the water it tends to disappear ‍♀️

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.