Lithium
Reason
Electronegativity increases from left to right. As Lithium is on the left side in periodic table hence it is the least electronegativity among the given options.
Lithium
Reason
Electronegativity increases from left to right. As Lithium is on the left side in periodic table hence it is the least electronegativity among the given options.
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ย ย X | ย ย Y |
---|---|
1: Element with atomic number 19 | A: Group 18 [0 group] |
2: Element with electronic configuration 2 | B: Group 16 [VI A] |
3: Element with a valency of -2 | C: Group 1 [IA] |
4: Element ‘P’ which loses 3 electrons to form a cation | D: Group 17 [VII A] |
5: Element ‘Q’ in period-3 which has the highest electron affinity | E: Group 13 [III A] |