Calculator MPeriodic Table Question 17 of 21 DA Sapling Learning this questionha

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Calculator MPeriodic Table Question 17 of 21 DA Sapling Learning this questionhas been austomizedby James xidos at University of Manitoba The elements of which group in the periodic table The elements of which group in the periodic table release the most energy by gaining electron? absorb the most energy when gaining an electron? O 1 (1A) O 1 (1A) O 2 (2A) O 13 (3A) O 13 3A) O 14 (4A) O 14 (4A) O 15 (5A) O 15 (5A) O 16 (6A) O 16 (6A) 17 (7A) O 17 (7A) O 18 (8A) O 18 (8A) Previous Next I Save And Exit

Explanation / Answer

The electron gain enthalpy of halogens(17(7A)) is highly negative because it needs only one electron to achieve nearest noble gas configuration.

For noble gases(18(8A)) it is highly positive because the extra electron has to be placed in the next higher principal quantum level which requires lots of energy.

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