Which among the following electronic configurations belong to main group elements?
A. $[\mathrm{Ne}] 3 \mathrm{~s}^1$
B. $[\operatorname{Ar}] 3 \mathrm{~d}^3 4 \mathrm{~s}^2$
C. $[K r] 4 d^{10} 5 s^2 5 p^5$
D. $[\operatorname{Ar}] 3 \mathrm{~d}^{10} 4 \mathrm{~s}^1$
E. $[R n] 5 f^0 6 d^2 7 s^2$
Choose the correct answer from the option given below :
The correct decreasing order of atomic radii (pm) of $$\mathrm{Li}, \mathrm{Be}, \mathrm{B}$$ and $$\mathrm{C}$$ is
Match List I with List II :
| List - I (Atom/Molecule) |
List - II (Property) |
||
|---|---|---|---|
| (A) | Nitrogen atom | (I) | Paramagnetic |
| (B) | Fluorine molecule | (II) | Most relative element in group 18 |
| (C) | Oxygen molecule | (III) | Element with highest ionisation enthalpy in group 15 |
| (D) | Xenon atom | (IV) | Strongest oxidising agent |
Identify the correct answer from the options given below :
Arrange the following elements in increasing order of first ionization enthalpy: $$\mathrm{Li}, \mathrm{Be}, \mathrm{B}, \mathrm{C}, \mathrm{N}$$
Choose the correct answer from the options given below:
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