Which elements of 3d series exhibit `+7` state? Give reasons for the same. 

Which element of group 13 exhibits +1 oxidation state

In which of the three states of matter - solids, liquids or gases is the movement of atoms about their own position. Give a reason for the same.

Elements of group 14 exhibit oxidation state of

Which transition elements exhibit +8 oxidation state

An element 'A' - is present in period 3 and group-2 of the periodic table. State if the element below 'A' in group-2 will be more metallic or less metallic than 'A', giving a reason for the same.

Explain why the elements of the same group exhibit the same chemical behaviour.

Identify the following : (i) Transition metal of 3d series that exhibits the maximum number of oxidation states. (ii) An alloy considering of approximately 95% lanthanoid metal used to produce bullet , shell and lighter flint.

Catenation is the ability of an atom to form bonds with other atoms of the same element . It is exhibited by both carbon and silicon. Compare the ability of catenation of the two elements .Give reasons.

An element of 3d-transition series two oxidation states x and y, differ by two units then:

In the 3d series (Sc = 21 to Zn = 30) : (i) Which elements shows maximum number of oxidation states ? (ii) Which elements shows only +3 oxidation state ? (iii) Which elements has the lowest enthalpy of atomization?