In some of the reactions, thallium resembles aluminium, whereas in others it resembles with group 1 metals. Support this statement by giving some evidences

The chemistry of the actinoid elements is not so smooth as that of the lanthanoids. Justify this statement by giving some examples from the oxidation state of these elements.

Why some. reactions are exothermic while some others are endothermic?

Statement 1 : the nuclear isomers are the atoms with the same atomic number and same mass number, but with different radioactive properties. Statement : 2 The nucleus in the excited state will evidently have a different half-life as compared to that in group state.

Lithium is group 1 element. It shows some similarities with group 2 element magnesium. Explain this relationship.

According to common Mendelian pattern of inheritance F_1 resembles the dominant parent. But in contrast there are certain other patterns of inheritance In which F_1 , does not resembles either of the parents. Name the pattern of inheritance in which F_1 resembles both parents.

According to common Mendelian pattern of inheritance F_1 resembles the dominant parent. But in contrast there are certain other patterns of inheritance In which F_1 , does not resembles either of the parents. Name the pattern of inheritance in which F_1 ,shows a character in between the two parents.

Lithium is group 1 element. It shows some similarities with group 2 element magnesium. What is the reason for this relationship?

Lithium is group 1 element. It shows some similarities with group 2 element magnesium. Write the name of the relationship.

Which statement is incorrect ? (1) Be exhibits coordination number six (2) Chlorides of both Be and Al have bridged structure in vapour phase (3)In alkali metals the reactivity increases but in halogens it decreases with increases in atomic number down the group (4) One mole of Mg3N2 when treated with excess of water give two moles of NH3