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JEE • CHEMISTRY • CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
Classification of elements and periodicity in properties practice · Easy
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Practice format and chapter quiz
These sets use single-correct-answer MCQs. They do not cover every JEE Main or JEE Advanced question format and are not full-length mock papers.
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181
Easy
181 of 184
Understanding
+4 | -1
Assertion (A): and show diagonal relationship.
Reason (R): and are diagonal to each other in the periodic table.
Reason (R): and are diagonal to each other in the periodic table.
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Correct option: B
Both (A) & (R) are true but the (R) is not the correct explanation of the (A)
Option B (Both (A) & (R) are true but the (R) is not the correct explanation of the (A)) is correct because while both the assertion and reason are true, the reason doesn't explain why Be and Al show a diagonal relationship.
182
Easy
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Understanding
+4 | -1
The period number in the periodic table corresponds to the ...... principal quantum number () of the elements. Here, refers to
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Correct option: B
Highest
Option B is correct because the period number in the periodic table corresponds to the highest principal quantum number (n) of the elements in that period.
183
Easy
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Understanding
+4 | -1
The correct order of ionisation energy for comparing carbon, nitrogen and oxygen is
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Correct option: A
C < N > O
Option C () is correct because shorter alkyl chains in alcohols lead to stronger hydrogen bonding due to reduced hydrophobic character.
184
Easy
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Remembering
+4 | -1
The number of valency electrons in carbon atom is:
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Correct option: D
4
Option D (4) is correct because carbon has an electronic configuration of , meaning it has 4 electrons in its outermost (valence) shell.
Revision notes and key takeaways
Review CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES in your textbook or class notes, then use this set to check your understanding.
Showing 181-184 of 184 questions