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Answer» Answer: groups Li=1A.... Be=2A...B=3A....C=4A...N=5A....O=6A....F=7A.....Ne=8A Period they all BELONG to second period. metals: Li ans Be non-metals: B, C, N, O, F, Ne halogen: Flourine noble gas: neon as moving from left to right in a period number of ELECTRON increase, no.of SHELL remain same, grip to valence electrons increases, nuclear force increases and thus TENDENCY to lose electrons decreases thus METALIC character decreases. Explanation: |
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