| List - I(Atom/Molecule) | List - II(Property) |
|---|---|
| (A) Nitrogen atom | (I) Paramagnetic |
| (B) Fluorine molecule | (II) Most reactive element in group 18 |
| (C) Oxygen molecule | (III) Element with highest ionisation enthalpy in group 15 |
| (D) Xenon atom | (IV) Strongest oxidising agent |
A. Nitrogen atom: Nitrogen occupies group 15. Its half-filled p orbitals confer elevated stability, resulting in the highest ionization enthalpy within group 15. Consequently, A corresponds to III.
B. Fluorine molecule: Fluorine is the most electronegative element and a potent oxidizing agent. Among the provided options, F2 exhibits the strongest oxidizing capability. Thus, B aligns with IV.
C. Oxygen molecule: Oxygen (O2) exhibits paramagnetism due to the presence of two unpaired electrons in its antibonding molecular orbitals. Therefore, C is matched with I.
D. Xenon atom: Xenon, a noble gas in group 18, is the most reactive element in its group. This increased reactivity stems from its larger atomic size and lower ionization energy compared to other noble gases, enhancing its propensity to form compounds. Hence, D corresponds to II.
Given below are two statements:
Statement (I): According to the Law of Octaves, the elements were arranged in the increasing order of their atomic number.
Statement (II): Meyer observed a periodically repeated pattern upon plotting physical properties of certain elements against their respective atomic numbers.
In the light of the above statements, Choose the correct answer from the options given below:
The correct orders among the following are:
[A.] Atomic radius : \(B<Al<Ga<In<Tl\)
[B.] Electronegativity : \(Al<Ga<In<Tl<B\)
[C.] Density : \(Tl<In<Ga<Al<B\)
[D.] 1st Ionisation Energy :
In\(<Al<Ga<Tl<B\)
Choose the correct answer from the options given below :