Classification of Elements and Periodicity in Properties

Match List - I with List - II. Choose the correct answer from the options given below :

1. A-II, B-III, C-IV, D-I
2. A-IV, B-III, C-II, D-I
3. A-III, B-II, C-IV, D-I
4. A-III, B-II, C-I, D-IV

First and second ionization enthalpies of lithium are 520 kJ mol-1 and 7297 kJ mol-1 respectively. Energy required to convert 3.5 mg lithium (g) into Li2+(g) [ Li(g) Li2+(g)] is kJ. (nearest integer) [Molar mass of Li = 7 g mol-1]

In a period, the first ionisation enthalpy of the element at extreme left and the negative electron gain enthalpy of the extreme right element, except noble gases, are respectively.

1. lowest and lowest
2. highest and lowest
3. lowest and highest
4. highest and highest

The 1st ionization enthalpy for Mg is +737 kJ/mol. The most probable estimated value of the 2nd ionization enthalpy of Mg is .

1. −906 kJ/mol
2. −856 kJ/mol
3. +1450 kJ/mol
4. +590 kJ/mol

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

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

The correct order of C, N, O and F in terms of second ionisation potential is

1. C < N < F < O
2. C < F < N < O
3. F < N < C < O
4. C < O < N < F

The correct trend in the first ionization enthalpies of the elements in the 3rd period of periodic table is :

1. Si < S < Al < P < Cl
2. Al < Si < S < P < Cl
3. S < Si < Al < P < Cl
4. Al < S < P < Si < Cl

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

A 'p'-block element (E) and hydrogen form a binary cation (EHx)+, while EH3 on treatment with K2HgI4 in alkaline medium gives a precipitate of basic mercury(II) amido-iodine. Given below are first ionisation enthalpy values ( kJ mol-1) for first element each from group 13, 14, 15 and 16. Identify the correct first ionisation enthalpy value for element E.

1. 1402
2. 1086
3. 801
4. 1312

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

Which of the following represents the correct trend for the mentioned property? Choose the correct answer from the options given below :

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

The atomic number of the element from the following with lowest 1st ionisation enthalpy is :

1. 32
2. 35
3. 19
4. 87

First ionisation enthalpy values of first four group 15 elements are given below. Choose the correct value for the element that is a main component of apatite family :

1. 834 kJ mol-1
2. 947 kJ mol-1
3. 1402 kJ mol-1
4. 1012 kJ mol-1

The successive 5 ionisation energies of an element are 800, 2427, 3658, 25024 and 32824 kJ/mol, respectively. By using the above values predict the group in which the above element is present :

1. Group 4
2. Group 2
3. Group 13
4. Group 14

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

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

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

The element having the highest first ionization enthalpy is

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