IIT-JEE 2000 Screening | Periodic Table & Periodicity Question 9 | Chemistry

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 1996

MCQ (Single Correct Answer)

-0.25

Which of the following has the maximum number of unpaired electrons?

Mg²⁺

Ti³⁺

V³⁺

Fe²⁺

IIT-JEE 1995 Screening

MCQ (Single Correct Answer)

-0.25

Which has most stable +2 oxidation state?

IIT-JEE 1992

MCQ (Single Correct Answer)

-0.25

The statement that is not correct for the periodic classification of element is

The properties of elements are the periodic functions of their atomic numbers

Non-metallic elements are lesser in number than metallic elements

The first ionisation energies of elements along a period do not vary in a regular manner with increase in atomic number

For transition elements the d-subshells are filled with electrons monotonically with increase in atomic number.

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