Subjects
Science TNSB Mentoring
Class 9
Periodic classification of elements
The early quest for elemental order

6. Elements

Question:

5 m.

Find the options based on Mendeleev's Periodic Table:

1. Select the general formulas that correspond to the higher oxide __________ , and hydrogen __________ compound of element \(O\).

\(RO\)
\(RO_3\)
\(R_2O\)
\(R_2O_7\)
\(R_3O_6\)
\(R_2O_5\)
\(R_2O_3\)
\(RO_2\)

\(RH\)
\(R_2H_5\)
\(RH_6\)
\(RH_2\)
\(RH_3\)
\(RH_4\)
\(RH_7\)
\(RH_5\)

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