Which of the following cannot be
prepared directly from its elements
(A) BeH2
(B) MgH
(C) CaH
(D) BaH
Answers
Answered by
8
ANSWER
The electronegativity of Cs = 0.7 and F = 0.4
Percentage of ionic character =16(χ
A
−χ
B
)+3.5(χ
A
−χ
B
)
2
Here χ
A
andχ
B
are electronegativity's of two atoms A and B
Percentage of ionic character
=16(0.7−0.4)+3.5(0.7−04)
2
=16(0.3)+3.5(0.09)
=4.8+0.315
=5.115
Answered by
1
Answer:
The answer is a option B
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