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CENGAGE CHEMISTRY-PERIODIC CLASSIFICATION OF ELEMENTS AND GENERAL INORGANIC CHEMISTRY-Exercises (True/False)
- Number of species that are isoelectronic with F^(ɵ) ion are five.
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- Number of species that are isoelectronics with Sr^(2+) ion are four.
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- Among the elements , Li, K, Ca, Cl and Kr, the element K has the lowes...
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- Be and Mg atoms do not impart colour to the flame.
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- Energy is released when electron is added to an isolated gases anion.
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- van der Waals radius of chlorine is less than that of covalent radius.
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- The oxides and hydroxides of alkali metals are strong bases.
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- Lithium is the lightest metal.
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- As the s character of the hybrid orbital decreases, the EN increases.
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- Ionic bonds are non-directional while covalent bonds are directional.
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