Count the total number of S- O bonds which are having equal length in bisulphate ion?
1. 3
2. 4
3. 5
4. 6

The total number of sigma bonds in the structure of P_4O_10 is

Number of S-S bond is H_(2)S_(n)O_(6) :

In an atom, the total number of electrons having quantum number n = 4, |m_(l)| = 1 and m_(s) = - (1)/(2) is

The total number of valence electrons in 4. 2g of N_3^- ion are :

Consider the following compounds (1) H_(3)CF (2) H_(2)CF_(2) (3) CH_(4) (4) H_(3)C CF_(3) (5) CH_(3)CH_(3) (6) C_(2)H_(4) and calculate value of Y+X, (where X is the total number of compounds which have H-C-H bond angles equal to 109^(@)28' and Y is the total number of compounds which have H-C-H bond angles greater than 109^(@)28' and less than 120^(@)

Consider the following compounds (1) H_(3)CF (2) H_(2)CF_(2) (3) CH_(4) (4) H_(3)C CF_(3) (5) CH_(3)CH_(2)+ (6) C_(2)H_(4) and calculate value of Y+X, (where X is the total number of compounds which have H-C-H bond angles equal to 109^(@)28' and Y is the total number of compounds which have H-C-H bond angles greater than 109^(@)28' and less than 120^(@)

Total number of 6 digits numbers in which only and all the four digits 1, 2, 3, 4 appear, is:

Number of S-S bond in H_(2)S_(n)O_(6) is :

Total number of sulphate ions present in 3.92 g of chromic sulphate is (Cr=52, S=32, O=16)

Total number of 10 – digit numbers in which only and all the digits 1, 2, 3, 4, 5, 6, 7, 8, 9 appear, is: