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The Peiodic Table — CHEMISTRY STD 9 — Question

ICSE BoardEnglish MediumSTD 9CHEMISTRYThe Peiodic Table2 Marks
Question
The elements A and B have electronic configuration 2, 8, 18, 2 and (2, 6) respectively.
(a) To which periods A and B belong?
(b) To which group A and B belong?
✓

Answer

(a) A belong 4th period and B 2nd period
(b) A belong IIB , 12 group and B belong to VIA 16th Group

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