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Periodic Table

Get chapter-wise JEE Main & Advanced questions with solutions

Q JEE MAIN 2019
The group number, number of valence electrons, and valency of an element with atomic number 15, respectively, are
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Q JEE MAIN 2020
In general the property (magnitudes only) that show an opposite trend in comparison to other properties across a period is
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Q JEE-MAIN 2019
The element with Z = 120 (not yet discovered) will be an/a
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Q JEE MAIN 2020
Three elements X, Y and Z are in the 3rd period of the periodic table. The oxides of X, Y and Z, respectively, are basic,...
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Q JEE MAIN 2019
In comparison to boron, berylium has
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Q JEE MAIN 2019
The element having greatest difference between its first and second ionization energies, is
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Q JEE MAIN 2019
When the first electron gain enthalpy $\left(\Delta_{\mathrm{eg}} \mathrm{H}\right)$ of oxygen is $-141 \mathrm{~kJ} / \mathrm{mol}$, its second electron gain enthalpy is
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Q JEE MAIN 2019
When the first electron gain enthalpy $\left(\Delta_{e 0} \mathrm{H}\right)$ of oxygen is $-141 \mathrm{~kJ} / \mathrm{mol}$, its second electron gain enthalpy is
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Q JEE MAIN 2020
The set that contains atomic numbers of only transition elements, is
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Q JEE MAIN 2020
The atomic number of Unnilunium is _______.
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