H :C—C— H 1) How many Chlorine atoms are in a molecule of dichloromethane? 2) How many Carbon atoms are in a molecule of dichloromethane? 3) What is the atomic mass of a single Chlorine atom from the periodic table? 1mol = grams? 4) What is the molar mass of the whole Dichloromethane molecule? 1mol = grams? Use the equality you found in #4 to answer questions #5 and #6. 5) If I have 450 grams of Dichloromethane, how many mols would that be? Use the molar mass of Dichloromethane to convert from grams to mols.

the correct answer is option d

explanation:

i was wrong its d because they dont use cm when calculating square roots

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.