The electronic configurations of elements are as-
$A = 1s^2 \ 2s^2 \ 2p^6 \ 3s^2 \ 3p^6 \ 4s^2$
$B = 1s^2 \ 2s^2 \ 2p^6 \ 3s^2 \ 3p^5$
Which of the following is formula of ionic compound that could be formed between these two elements A and B?

Which of the following pairs represents isobars?

Identify the type of hybridization of carbon that is attached to the OH group, in benzylic alcohol?

Calculate the temperature of 2 moles of gas occupying a volume of 5.0 liters at 24.6 atmospheres?
($R = 0.0821$ L atm K$^{-1}$ mol$^{-1}$)