JEE Main 2025 (Online) 28th January Evening Shift | Periodic Table & Periodicity Question 5 | Chemistry

Statement II : Meyer observed a periodically repeated pattern upon plotting physical properties of certain elements against their respective atomic numbers.

In the light of the above statements, choose the correct answer from the options given below :

Both Statement I and Statement II are false

Statement I is false but Statement II is true

Statement I is true but Statement II is false

Both Statement I and Statement II are true

JEE Main 2025 (Online) 28th January Morning Shift

MCQ (Single Correct Answer)

-1

The incorrect decreasing order of atomic radii is

$\mathrm{Si}>\mathrm{P}>\mathrm{Cl}>\mathrm{F}$

$\mathrm{Mg}>\mathrm{Al}>\mathrm{C}>\mathrm{O}$

$\mathrm{Al}>\mathrm{B}>\mathrm{N}>\mathrm{F}$

$\mathrm{Be}>\mathrm{Mg}>\mathrm{Al}>\mathrm{Si}$

JEE Main 2025 (Online) 28th January Morning Shift

MCQ (Single Correct Answer)

-1

Consider the following elements $\mathrm{In}, \mathrm{Tl}, \mathrm{Al}, \mathrm{Pb}, \mathrm{Sn}$ and Ge . The most stable oxidation states of elements with highest and lowest first ionisation enthalpies, respectively, are

+4 and +1

+4 and +3

+1 and +4

+2 and +3

JEE Main 2025 (Online) 24th January Evening Shift

MCQ (Single Correct Answer)

-1

The successive 5 ionisation energies of an element are $800,2427,3658,25024$ and $32824 \mathrm{~kJ} / \mathrm{mol}$, respectively. By using the above values predict the group in which the above element is present :

Group 4

Group 2

Group 13

Group 14

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