Among $CaH_2, BeH_2 , BaH_2,$ the order of ionic character is
For $2^{nd}$ group hydrides, on moving down the group metallic character of metals increases so ionic character of metal hydride increases. Hence the option (3) should be correct option.
Among $CaH_2, BeH_2 , BaH_2,$ the order of ionic character is
Consider the change in oxidation state of Bromine corresponding to different emf values as shown in the diagram below : |
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For the redox reaction |
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Which one of the following conditions will favour maximum formation of the product in the reaction, |
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When initial concentration of the reactant is doubled, the half-life period of a zero order reaction |
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The bond dissociation energies of $X_2 , Y_ 2$ and XY are in the ratio of 1 : 0.5 : 1. ΔH for the formation of XY is –200 kJ $mol^{–1}$. The bond dissociation energy of $X_2$ will be |
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The correction factor ‘a’ to the ideal gas equation corresponds to |
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Consider the following species : |
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Magnesium reacts with an element (X) to form an ionic compound. If the ground state electronic configuration of (X) is $1s^2 2s^2 2p^3$, the simplest formula for this compound is |
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Iron exhibits bcc structure at room temperature. Above 900°C, it transforms to fcc structure. The ratio of density of iron at room temperature to that at 900°C (assuming molar mass and atomic radii of iron remains constant with temperature) is |
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Which one is a wrong statement? |
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