16.
weight
electron configuration
two, four,
number
six
symbol
group (para 1-5; fig 1-2)
17.
22 (para 1-5f)
18.
combining
electrons; gain, loose, share, shell (para 1-6a)
19.
charged atoms
gained, lost (para 1-6f)
20.
positive (para 1-6f)
21.
negative (para 1-6f)
22.
group, changed (para 1-6f)
23.
eight (para 1-6b)
24.
a
Ba: +2
b
Fe; +2, +3
c
SO4: -2
d
P +3 +5
e
H +1
f
K +1
g
O; -2
h
Cu +1 +2
i
Br -1
j
Hg +1 +2
k
I; -1
l
S: -2
m
Ag; +1
n
Ca; +2
o
NO 3; -1
p
Al; +3
q
Cl; -1
r
Zn; +2 (para 1-6e; Table 1-3)
25.
electrovalent, ionic; covalent, coordinate covalent (para 1-6g)
MD0803
1-43