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Modern Periodic Table and Periodic Properties — Chemistry STD 10 — Question

ICSE BoardEnglish MediumSTD 10ChemistryModern Periodic Table and Periodic Properties2 Marks
Question
Amongst the elements P (atomic number 14), Q (atomic number 6) and R (atomic number 15), which elements have similar chemical properties and why?
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Answer

P and Q have similar chemical properties.
It is because both P and Q have same number of electrons (4 electrons) in their valence shells.

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