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Science · 2022 · 2 marks
CBSE 2022 · Region 1 · Set 3 · Q2
The atomic number of a non-metal 'X' is 8. (a) Write the period number and the group number of 'X'. (b) Draw the electron dot structure of its…
The atomic number of a non-metal 'X' is 8.
(a)
Write the period number and the group number of 'X'.
(b)
Draw the electron dot structure of its molecule.
Marking-scheme solution
(a)
• Period number-$\displaystyle 2$ - Group number-$\displaystyle 16$
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CBSE Class 10 Science past-paper question from the 2022 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.