The p-Block Elements questions
1863 published questions with worked solutions.
- The number of electrons present in the valence shell of group 13 elements is:
- Which member of group 13 is (practically) liquid at 30°C?
- The main factor responsible for the weak acidic nature of the B-F bonds in BF_3 is:
- The hardest compound of boron is:
- Boron compounds behave as Lewis acids because of their:
- Boric acid burnt with ethyl alcohol gives a green edged flame due to the combustion of:
- A particular element belongs to group 13 and period II. It is:
- Stable compounds in the +1 oxidation state are formed by:
- When orthoboric acid (H_3BO_3) is heated, the residue left is:
- Which of the following orders presents the correct sequence of the increasing basic nature of the given oxides?
- Which is false in the case of boric acid (H_3BO_3)?
- The two types of bonds present in B_2H_6 are covalent and ......
- Diborane does not undergo a cleavage reaction with:
- B_2O_3 is:
- Boron readily dissolves in:
- Boron was isolated by:
- Which of the following is not correct in case of boron nitride?
- The correct Lewis acid order for boron halides is:
- The stability of the +1 oxidation state increases in the sequence:
- The correct formula of borax is:
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