A sheet of metal is twice as long as it is wide. 1.5 inch squares are cut out of each corner so that is can be formed into an open-topped box. Is the area of the original piece of sheet metal is 98 inches squared, what will the volume of the box be

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.

gas and precipitate r the correct answers