Periodic Table

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Q JEE Main 2019

The ore that contains both iron and copper is

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Q JEE MAIN 2021

The characteristics of elements X,Y and Z with atomic numbers, respectively, 33, 53 and 83 are :

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Q JEE Main 2019

In general, the properties that decrease and increase down a group in the periodic table, respectively, are

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Q JEE MAIN 2021

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Q JEE-Main-2021_

The absolute value of the electron gain enthalpy of halogens satisfies:

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Q JEE MAIN 2021

The ionic radius of $\mathrm{Na}+$ ions is 1.02 Å.. The ionic radii (in Å. ) of $\mathrm{Mg}^{2+}$ and $\mathrm{Al}^{3+}$, respectively, are-

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Q JEE MAIN 2021

The correct order of electron gain enthalpy is

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Q JEE MAIN 2021

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Q JEE MAIN 2021

Consider the elements Mg. Al, S, P and Si, the correct increasing order of their first ionization enthalpy is :

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Q JEE MAIN 2022

The incorrect statement is

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