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Byju's Answer
Standard XII
Chemistry
Electron Gain Enthalpy
Bond order of...
Question
Bond order of beryllium molecule is zero.Explain.
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Solution
B
e
r
y
l
l
i
u
m
m
o
l
e
c
u
l
e
h
a
s
B
e
2
B
e
h
a
s
4
e
l
e
c
t
r
o
n
s
.
S
o
t
o
t
a
l
l
y
8
e
l
e
c
t
r
o
n
s
a
r
e
p
r
e
s
e
n
t
.
T
h
e
M
O
c
o
n
f
i
g
u
r
a
t
i
o
n
i
s
σ
1
s
2
σ
1
s
*
2
σ
2
s
2
σ
2
s
*
2
B
o
n
d
o
r
d
e
r
=
1
2
(
n
u
m
b
e
r
o
f
e
l
e
c
t
r
o
n
s
i
n
b
o
n
d
i
n
g
-
n
u
m
b
e
r
o
f
e
l
e
c
t
r
o
n
s
i
n
n
o
n
b
o
n
d
i
n
g
)
=
1
2
(
4
-
4
)
=
0
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