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Questions  >>  EAMCET  >>  Chemistry

Which one of the following order is correct for the first ionisation energies of the elements?

\[\begin {array} {1 1} (1)\;B < Be < N < O & \quad (2)\;Be < B < N < O \\ (3)\;B < Be < O < N & \quad (4)\;B < O < Be < N \end {array}\]

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