Classification of Elements and Periodicity in Properties

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

If IUPAC name of an element is "Unununnium" then the element belongs to nth group of Periodic table. The value of n is .

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