Harrison is making a cake. He prepares some batter and places it into the oven. Harrison realize there’s a gas, carbon dioxide, coming out of the batter as it bakes. Which options are true about carbon dioxide? (Mark all that apply!) A. It is made of atoms that did not exist before
B. it is the dough changing states from solid to gas.
C. It is a new gas that forms during baking.
Please help, it’s my last test! I’ll mark as Brainliest!

particle   p is an electron and particle q is a neutron

a polar bond is formed when electrons are shared unevenly between atoms

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.