Classification of Elements and Periodicity in Properties

Which of the following statements are true? Choose the correct answer from the options given below :

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

Which among the following electronic configurations belong to main group elements? Choose the correct answer from the option given below :

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

Arrange the following elements in increasing order of first ionization enthalpy: Li, Be, B, C, N Choose the correct answer from the options given below:

1. Li < Be < B < C < N
2. Li < B < Be < C < N
3. Li < Be < C < B < N
4. Li < Be < N < B < C

Arrange the following elements in increasing order of electronegativity: N, O, F, C, Si Choose the correct answer from the options given below :

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

The correct decreasing order of atomic radii (pm) of Li, Be, B and C is

1. Be > Li > B > C
2. Li > Be > B > C
3. C > B > Be > Li
4. Li > C > Be > B

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

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

The element expected to form largest ion to achieve the nearest noble gas configuration is

1. F
2. N
3. Na
4. O

The IUPAC name of an element with atomic number 119 is

1. ununennium
2. unnilennium
3. unununnium
4. ununoctium

The correct order of first ionization enthalpy for the given four elements is :

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

If first ionization enthalpies of elements X and Y are 419 kJ mol-1 and 590 kJ mol-1, respectively and second ionization enthalpies of X and Y are 3069 kJ mol-1 and 1145 kJ mol-1, respectively. Then correct statement is :

1. Both X and Y are alkaline earth metals
2. X is an alkali metal and Y is an alkaline earth metal
3. X is an alkaline earth metal and Y is an alkali metal
4. Both X and Y are alkali metals