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Page 1

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The
P bl
ock:
Group
7
What
ar
e t
he
hal
ogens?

Hal
ogens
are
element
s i
n gr
oup7.


Al
l
hal
ogens
have
7 el
ect
rons
in
out
er
shel
l.


None
found
nat
ural
ly
in
element
f
orm.
Found
as
hal
ide
ion.…

Page 2

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I
n di
spl
a cement r
eact
ions
one
of
the
hal
ogens
act
as
oxi
dis
ing
agent
and
other

r
educing
ag ent
.

Br2
+ 2e
2Br

I
2
+ 2e
2I


Br
gai
ns
e lect
ron
fr
om
I
ions
so
act
s as…

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