| 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 is in group 15. Nitrogen has the highest ionization enthalpy in group 15 due to its half-filled p orbitals providing extra stability. Thus, A-III.
B. Fluorine molecule: Fluorine is the most electronegative element and a powerful oxidizing agent. F2 is the strongest oxidizing agent among the given options. Thus, B-IV.
C. Oxygen molecule: Oxygen (O2) is paramagnetic because it has two unpaired electrons in its antibonding molecular orbitals. Thus, C-I.
D. Xenon atom: Xenon is a noble gas in group 18. It is the most reactive element in group 18 due to its larger size and lower ionization energy compared to other noble gases in the same group, making it more susceptible to forming compounds. Thus, D-II.
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 :
Given below are two statements:
Statement I: $ H_2Se $ is more acidic than $ H_2Te $
Statement II: $ H_2Se $ has higher bond enthalpy for dissociation than $ H_2Te $
In the light of the above statements, choose the correct answer from the options given below.
A sphere of radius R is cut from a larger solid sphere of radius 2R as shown in the figure. The ratio of the moment of inertia of the smaller sphere to that of the rest part of the sphere about the Y-axis is : 
A constant voltage of 50 V is maintained between the points A and B of the circuit shown in the figure. The current through the branch CD of the circuit is :
The current passing through the battery in the given circuit, is: 
Given below are two statements:
Statement I: The primary source of energy in an ecosystem is solar energy.
Statement II: The rate of production of organic matter during photosynthesis in an ecosystem is called net primary productivity (NPP).
In light of the above statements, choose the most appropriate answer from the options given below: