The correct answer is 9.7 grams because mg are 1,000 difference to grams.
Answer:
Here is a picture of all the elements
When it would be on a flat area with no slope. and no movement
Atomic number Bi = 83
electron configuration Bi : 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p3
p orbitals = 3p6, 4p6, 5p6 and 6p3
so, 6 + 6 + 6 + 3 = 21 electrons
