1
JEE Main 2024 (Online) 4th April Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

The correct order of the first ionization enthalpy is

A
$$\mathrm{Ga}>\mathrm{Al}>\mathrm{B}$$
B
$$\mathrm{Tl}>\mathrm{Ga}>\mathrm{Al}$$
C
$$\mathrm{Al}>\mathrm{Ga}>\mathrm{Tl}$$
D
$$\mathrm{B}>\mathrm{Al}>\mathrm{Ga}$$
2
JEE Main 2024 (Online) 4th April Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Given below are two statements :

Statement I : The correct order of first ionization enthalpy values of $$\mathrm{Li}, \mathrm{Na}, \mathrm{F}$$ and $$\mathrm{Cl}$$ is $$\mathrm{Na}<\mathrm{Li}<\mathrm{Cl}<\mathrm{F}$$.

Statement II : The correct order of negative electron gain enthalpy values of $$\mathrm{Li}, \mathrm{Na}, \mathrm{F}$$ and $$\mathrm{Cl}$$ is $$\mathrm{Na}<\mathrm{Li}<\mathrm{F}<\mathrm{Cl}$$

In the light of the above statements, choose the correct answer from the options given below :

A
Statement I is true but Statement II is false
B
Both Statement I and Statement II are false
C
Statement I is false but Statement II is true
D
Both Statement I and Statement II are true
3
JEE Main 2024 (Online) 4th April Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

The correct order of first ionization enthalpy values of the following elements is :

(A) O

(B) N

(C) Be

(D) F

(E) B

Choose the correct answer from the options given below :

A
$$\mathrm{A}<\mathrm{B}<\mathrm{D}<\mathrm{C}<\mathrm{E}$$
B
$$\mathrm{C}<\mathrm{E}<\mathrm{A}<\mathrm{B}<\mathrm{D}$$
C
$$\mathrm{E}<\mathrm{C}<\mathrm{A}<\mathrm{B}<\mathrm{D}$$
D
$$\mathrm{B}<\mathrm{D}<\mathrm{C}<\mathrm{E}<\mathrm{A}$$
4
JEE Main 2024 (Online) 4th April Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Number of elements from the following that CANNOT form compounds with valencies which match with their respective group valencies is ________. B, C, N, S, O, F, P, Al, Si

A
7
B
3
C
5
D
6
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