Classification of Elements and Periodicity in Properties

Which of the following electronegativity order is incorrect?

1. S<Cl<O<F
2. Al<Si<C<N
3. Al<Mg<B<N
4. Mg<Be<B<N

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

1. Both Statement I and Statement II are false
2. Both Statement I and Statement II are true
3. Statement I is true but Statement II is false
4. Statement I is false but Statement II is true

Identify the correct statements about p-block elements and their compounds. Choose the correct answer from the options given below :

1. (B) and (D) only
2. (B) and (E) only
3. (D) and (E) only
4. (A) and (C) only

The electron affinity values are negative for Choose the most appropriate answer from the options given below :

1. A, B, D and E only
2. D and E only
3. A and D only
4. A, B and C only

The statement(s) that are correct about the species O2-, F-, Na+ and Mg2+. Choose the most appropriate answer from the options given below :

1. C and D only
2. A, C and D only
3. B, C and D only
4. A, B, C and D

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

1. Both Statement I and Statement II are true
2. Statement I is incorrect but Statement II is true
3. Both Statement I and Statement II are false
4. Statement I is correct but Statement II is false

The correct order of first ionization enthalpy values of the following elements is : Choose the correct answer from the options given below :

1. A < B < D < C < E
2. C < E < A < B < D
3. E < C < A < B < D
4. B < D < C < E < A

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

1. 7
2. 3
3. 5
4. 6

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

1. Statement I is true but Statement II is false
2. Both Statement I and Statement II are false
3. Statement I is false but Statement II is true
4. Both Statement I and Statement II are true

In case of isoelectronic species the size of F-, Ne and Na+ is affected by :

1. Nuclear charge (Z)
2. None of the factors because their size is the same
3. Electron-electron interaction in the outer orbitals
4. Principal quantum number (n)

Given below are two statements : In the light of the above statements, choose the most appropriate answer from the options given below :

1. Both Statement I and Statement II are false
2. Both Statement I and Statement II are true
3. Statement I is false but Statement II is true
4. Statement I is true but Statement II is false

The correct sequence of electron gain enthalpy of the elements listed below is Choose the most appropriate from the options given below:

1. A > D > C > B
2. A > D > B > C
3. D > C > B > A
4. C > B > D > A

Consider the following elements. [figure] Which of the following is/are true about A', B', C' and D' ? Choose the correct answer from the options given below :

1. A only
2. B, C and D only
3. A and B only
4. A, B and D only

Given below are two statements: In the light of the above statements, choose the most appropriate from the options given below:

1. Statement I is False but Statement II is true
2. Both Statement I and Statement II are False
3. Statement I is True But Statement II is False
4. Both Statement I and Statement II are True

Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R : In the light of the above statements, choose the most appropriate from the options given below :

1. A is false but R is true
2. Both A and R are true but R is NOT the correct explanation of A
3. Both A and R are true and R is the correct explanation of A
4. A is true but R is false

Given below are two statements: In the light of the above statements, choose the most appropriate from the options given below

1. Both Statement I and Statement II are true
2. Both Statement I and Statement II are false
3. Statement I is false but Statement II is true
4. Statement I is true but Statement II is false

The element having the highest first ionization enthalpy is

1. C
2. Al
3. Si
4. N

Given below are two statements : In the light of the above statements, choose the most appropriate answer from the options given below :

1. Statement I is false but Statement II is true
2. Both Statement I and Statement II are true
3. Statement I is true but Statement II is false
4. Both Statement I and Statement II are false