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 :
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✓ Correct
- (D)Both Statement I and Statement II are false
Answer: (C)
Solution
Statement I is true: the 28 elements of the and series are placed as separate rows below the main body of the periodic table so that the table stays compact, while their placement (by electron configuration) still respects the periodic classification.
Statement II is false: -block elements (alkali and alkaline earth metals) are highly reactive and are found in nature only as compounds, never in the free (pure) state.
Statement II is false: -block elements (alkali and alkaline earth metals) are highly reactive and are found in nature only as compounds, never in the free (pure) state.
JEE Main · 2024 · 27 Jan 2024 · Shift 1 · Single correct option