Which of the following statement is/are correct regarding the compounds of carbon family elements ?

For a spontaneous chemical process, the free energy change is

Among the following compounds which exhibits optical isomerism

(R ) -2- Octy tosylate is sololyzed in water under ideal $S_{N^1}$ conditions ,the product (s) will be :

In which of the following preparation of ethane a new C-C bond is formed

Ethanal and propanone can be distinguished by

Which of the following statements are correct for an electron that has n = 4 and m = -2 ?

The interlayer distance in graphite is

The first carbon compound prepared from its elements is

Which of the following are correct for real gases?