Question

Given below are two statements:
Statement (I): The 4f and 5f-series of elements are placed separately in the Periodic table to preserve the principle of classification.
Statement (II): s-block elements can be found in pure form in nature.
In the light of the above statements, choose the most appropriate answer from the options given below:

• A. Statement I is false but Statement II is true
• B. Both Statement I and Statement II are true
• C. Statement I is true but Statement II is false
• D. Both Statement I and Statement II are false

Answer 1

Answer: (C)

Statement I is true but Statement II is false

Answer 2

Statement I is correct because the 4f and 5f series (lanthanides and actinides) are placed separately to maintain the structure of the Periodic Table. However, Statement II is incorrect, as s-block elements are highly reactive and are generally found in combined states in nature.