Classification of Elements and Periodicity in Properties · Question 1

Identify the incorrect statement from the following:

1. The largest and the smallest species among Mg, Mg2+, Al and Al3+ are Al and Mg2+, respectively.
2. The IUPAC name of the element with atomic number 107 is Unnilseptium.
3. The similarity in behaviour of Li with Mg is referred to as 'diagonal relationship'.
4. The oxidation state and covalency of Al in [AlCl(H2O)5]2+ are 3 and 6 respectively.

Among the following options, the correct trend in the electron gain enthalpy is

1. I > Br > Cl > F
2. F > Cl > Br > I
3. Br > Cl > F > I
4. Cl > F > Br > I

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

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

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