Question

Ram and Shyam were performing an experiment. They connected a bulb via A, conducting wire, battery and a key. Later on, they replaced A with B. A and B are the allotropes of an element of group 14. When they inserted the key, it was observed that in the first case, the bulb did not glow but in the second case the bulb glowed. Identify A and B. Explain this difference on the basis of their structure

Answer 1

Answer:

I can't understand this question but I think

Explanation:

A, bulb will glow because of the open circuit if the circuit is closed the bulb does not glow and B, bulb will not glow because the circuit is closed and open circuit will glow the bulb B

and Mark me as brainlist