The first ionization enthalpies for three elements are 1314, 1680, and 2080 kJ mol $^{- 1}$ , respectively. The correct sequence of the elements is

O,F, and Ne

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F, O and Ne

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Ne, F and O

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F, Ne and O

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Solution

The correct option is A
O,F, and Ne

As we move from left to right in period ionisaton energy increases.

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1314, 1680

2080

k J m o l^{- 1}

The first ionization enthalpies for three elements are 1314, 1680, and 2080 kJ mol $^{- 1}$ , respectively. The correct sequence of the elements is

K J m o l^{- 1} : 520, 899, 801, 1086, 1402, 1314, 1681, 2080

579, 1795, 2758

11580 k J m o l^{- 1}

1^{s t}

m o l^{- 1}

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