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
Answer:
it is because solid is.in a fixed shape so it is easier to separate a solid from another solid compared to a liquid from another liquid
Answer:
C. Al
Explanation:
2Al+ 3H2SO4(l)------> Al2(SO4)3+ 3H2
