Define the term transition element.

Define the term 'radiation'.

Define the term plasmid.

In context with the transition elements, which of the following statements is incorrect ?

Define the term molality.

Comment on the statement that elements of the first transition series posses many properties different form those of heavier transition elements.

What are inner-transition elements ? Decide which of the following atomic numbers are the numbers of the inner-transition elements : 29, 59, 74, 95, 102, 104.

Define the term mammal.