Match these items. 1. kg
measurement of mass
2. cm 2
measurement of area
3. L
measurement of length
4. m
measurement of volume

( these are not in order you have too match them)

Explanation:

Kg ... Mass

L... Volume

m... length

Cm2 Area

ok whats the question if not i cannot you i need question and need a thing to answer

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.