Classification of Elements and Periodicity in Properties

The type of oxide formed by the element among Li, Na, Be, Mg, B and Al that has the least atomic radius is :

1. AO
2. AO2
3. A2O
4. A2O3

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 incorrect decreasing order of atomic radii is

1. Si > P > Cl > F
2. Mg > Al > C > O
3. Al > B > N > F
4. Be > Mg > Al > Si

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 statements are NOT true about the periodic table? Choose the correct answer from the options given below:

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

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 element that does not belong to the same period of the remaining elements (modern periodic table) is:

1. Platinum
2. Osmium
3. Iridium
4. Palladium

Match List-I with List-II.

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

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