(1) What is the valence electron configuration for the krypton atom? (2) What is the valence electron configuration for the silicon atom? (1) What is the name of the element with a valence electron configuration of 2s²2p4? (2) What is the name of the element with a valence electron configuration of 4s24p6? (1) The element with a valence electron configuration of 2s 2p is in group and period (2) The element with a valence electron configuration of 3s²3p2 is in group and period

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