p-Block Elements-I 1 Question 5
5. The electronegativity of aluminium is similar to
(2019 Main, 10 Jan I)
(a) lithium
(b) carbon
(c) beryllium
(d) boron
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Answer:
Correct Answer: 5. (c)
Solution:
- Let, us consider the electronegativity values of the given elements,
Be and Al show diagonal relationship which is based on their same $\frac{Z^*}{r}$ value
(${Z^*}$ is effective nuclear charge, r= atomic radius).
So, they have similar electronegativity.
