IIT-JEE 2002 Screening | Periodic Table & Periodicity Question 4 | Chemistry

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IIT-JEE 2002 Screening

MCQ (Single Correct Answer)

-0.5

Identify the least stable ion amongst the following

Li^-

Be^-

B^-

C^-

IIT-JEE 2000 Screening

MCQ (Single Correct Answer)

-0.5

Read the following statement and explanation and answer as per the options given below

ASSERTION : The first ionization energy of Be is greater than that of B.

REASON : 2p orbital is lower in energy than 2s.

If both assertion and reason are CORRECT, and reason is the CORRECT explanation of the assertion

If both assertion and reason are CORRECT, and reason is not the CORRECT explanation of the assertion

If assertion is CORRECT, but reason is INCORRECT

If assertion is INCORRECT, but reason is CORRECT

IIT-JEE 2000 Screening

MCQ (Single Correct Answer)

-0.25

The correct order of radii is

N < Be < B

F^- < O^2- < N^3-

Na < Li < K

Fe³⁺ < Fe²⁺ < Fe⁴⁺

IIT-JEE 2000 Screening

MCQ (Single Correct Answer)

-0.25

Amongst H₂O, H₂S, H₂Se and H₂Te, the one with the highest boiling point is

H₂O because of hydrogen bonding

H₂Te because of higher molecular weight

H₂S because of hydrogen bonding

H₂Se because of lower molecular weight

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