For each of the following pair of hydrogen orbitals, indicate which is higher in energy: 4f, 5s.

Which of the following pairs give positive Tollen’s test?

Compare the angles in each of the following pairs by observation and state which is greater:

In a hydrogen atom, which orbital is higher in energy than a 3s-orbital?

Which number in each of the following pairs is to the right of the other on the number line? 4,9

Which number in each of the following pairs is to the right of the other on the number line?< 0,-5

Which of the following set of quantum numbers shows orbital of highest energy ?

Indicate which pairs of angles are: Linear pairs.

Which number in each of the following pairs is smaller ? 0,-9

Explain, giving reasons, which one of the following pairs exhibits the property indicated : V or Mn, which one exhibits more number of oxidation states.