Question 2 (1 point) Solar radiation is absorbed by the ocean. The absorbed energy evaporates water
from the ocean. As water vapor (mass) enters the atmosphere it carries with it the
heat used to evaporate the water and raises the air's humidity. What type of system
is the ocean?
interactive system
open system
closed system
isolated system

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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.