MCQ
he electrons revolve around the nucleus only in certain fixed paths called:
- AOrbits
- BOrbitals
- CCenter
- DLayer
Explanation:
The electrons revolve around the nucleus only in certain fixed paths called orbits. They are K, L, M, N, etc. Each orbit consists of a fixed number of electrons. The electrons are distributed in the orbits according to the formula 2n2.
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| Column $-I$ | Column $-II$ |
| $(A)$ Aniline | $(i)$ Red colour with $FeCl_3$ |
| $(B)$ Benzene sulfonic acid | $(ii)$ Violet colour with sodium nitroprusside |
| $(C)$ Thiourea | $(iii)$ Blue colour with hot and acidic solution of $FeSO_ 4$ |