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The ions having same number of electrons are called isoelectronic ions. The above order is due to increasing order of effective nuclear charge.
1 Answers 2 viewsShift in equilibrium on adding a substance that provides more of an ionic species already present in the dissociation equilibrium.
1 Answers 1 viewspH = – log[3.8 × 10–3 ] = – {log[3.8] + log[10–3 ]} = – {(0.58) + (– 3.0)} = – {– 2.42} = 2.42 Therefore, the pH of the soft drink is 2.42...
1 Answers 1 views(i) Suppression of ionization of weak electrolyte by adding a strong electrolyte having an ion common. (ii) Product of the molar concentrations of the ions in a saturated solution, each concentration...
1 Answers 1 views(a) Human muscle fluid 6.83: pH = 6.83 pH = – log [H+] 6.83 = – log [H+] [H+] =1.48 × 10–7 M (b) Human stomach fluid, 1.2: pH =1.2 1.2 = – log [H+] [H+]...
1 Answers 1 views(b) calcium and phosphorus
1 Answers 1 viewsNumber of valence electrons in Cl− ion are: (a) 16 ( x ) (b) 8 (√ ) (c) 17 ( x ) (d) 18 ( x )
1 Answers 2 views[Hint : Due to fully filled octet of Xe.]
1 Answers 1 viewsOxygen and fluoride have small size and high electronegativity. They can oxidise the metal.
1 Answers 1 views(i) NH3, NO2. (ii) + 3
1 Answers 1 views