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Find out atomic number, group, block period using subshell electronic configuration and then complete the table.

Subshell electronic configuration Atomic number Group Block Period
1s22s22p6
1s22s22p63s1
1s22s22p63s23p23d54s1
25
28
26

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Subshell electronic configuration Atomic number Group Block Period
1s22s22p6 10 18 p 2
1s22s22p63s1 11 1 s 3
1s22s22p63s23p23d54s1 24 6 d 4
1s22s22p63s23p63d54s2 25 7 d 4
1s22s22p63s23p63d84s2 28 10 d 4
1s22s22p63s23p63d64s2 26 8 d 4

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