General Characteristics

(i) What are intersitial compounds ? Give their general characteristics. (ii) Transition metals are well known to form complex compound. Why ? Explain with an example. (iii) Explain the oxidation state of actinoids.

The mechanism of SN1 reaction is given as : underset("pair")underset("Solvent Separated ion")(underset("lon pair")(R-X-R^(o+)X^(Theta)rarrR^(o+))"||"X^(Theta)overset(Y^(Theta))rarrR-Y+X^(Theta)) A student writes general characteristics based on the given mechanism as : (a) The reaction is favoured by weak nucleophiles. (b) R^(o+) would be easily formed if the substituents are bulky. (c) The reaction is accompanied by racemization. Which observations are correct?

Write the general characteristic features of Nemathelminthes.

Which of the following is not a general characteristic of equilibrium involving physical processes ?