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Science · 2022 · 2 marks
CBSE 2022 · Region 4 · Set 3 · Q4
Give the criteria on the basis of which elements are placed (i) in a group and (ii) in a period in the modern periodic table. The atomic number of an…
Give the criteria on the basis of which elements are placed (i) in a group and (ii) in a period in the modern periodic table. The atomic number of an element is $\displaystyle 16$ . According to the criteria, in which group and period it should be placed ?
Marking-scheme solution
Criteria
(i) Group- valence electrons
(ii) Period- number of shells
Group -$\displaystyle 16$
Period -$\displaystyle 3$ \(\displaystyle { }^{\text {rd }}\)
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