Question

Pair of elements with equal values of electro negativity? [ ]

a) Be, Al b) Mg, Al c) Mg, Ca d) F, Ne




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Answer 1

Answer:

The correct option is (a) $Be, Al$.

Explanation:

• There is a diagonal relation between $Be$ and $Al$.
• They show a lot of similarities.
• This is due to the fact that as move across the period, radii decrease, and down the group, nuclear charges increase. On moving diagonally, these effects may compensate for each other.
• The electronegativity of $Be$ is 1.57 and the electronegativity of $Al$ is 1.61. The values are approximately the same.