Homework #8

ISBS #19-24 pg. 51


19.

  a. carbon: 6 protons, 6 electrons

  b. aluminum: 13 protons, 13 electrons

  c. lead: 82 protons, 82 electrons

  d. chlorine: 17 protons, 17 electrons

20.

sulfur: is not a neutral element.

iron: in not a neutral element.

silver: is a neutral element.

iodine: is not a neutral element.

21.

a. O^2-: anion

b. Li: electrically neutral atom

c. Cl: electrically neutral atom

d. Ag+: cation

e. Hg^2+: cation

22.

a. O^2-: is gaining electrons

b. Li isn’t losing or gaining any electrons, so it is neither

c. Cl: isn’t losing or gaining any electrons, so it is neither

d. Ag+: is losing an electron

e. Hg^2+: is losing an electron

23.

a. H

b. Na+

c. Cl-

d. Al^3+

24.

a. Kl

b. CaS

c. (Fe)(Br)3

d. (Ba)(0H)2

e. (NH4)3(PO4)

F. (Al)2(0)3