Name an inert radio element.

Name a minor trace element which increases the absorption of water and calcium.

Name a transition element which does not exhibit variable oxidation states.

Write the electronic configuration of the following- (a) inert gas (b) transition element (c) innner transition element.

Name the mineral elements , are factors of photosynthesis are

Name the lightest and the heaviest transition elements.

Name any two transition elements and any two inner transition elements.

Name the diamagnetic element in the 3d - series.

Name a pair of elements which exhibits diagonal relationship.

Name the transition element having lowest atomic mass.

Name the transition elements with the highest and the lowest density.