Fluoride ion F-18 এর কাজ, ব্যবহারের নিয়ম

The ions having same number of electrons are called isoelectronic ions. The above order is due to increasing order of effective nuclear charge.

Shift in equilibrium on adding a substance that provides more of an ionic species already present in the dissociation equilibrium.

pH = – 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...

(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...

(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+]...

(b) calcium and phosphorus

Number of valence electrons in Cl− ion are:  (a) 16 ( x )  (b) 8 (√ )  (c) 17 ( x )  (d) 18 ( x )

[Hint : Due to fully filled octet of Xe.]

Oxygen and fluoride have small size and high electronegativity. They can oxidise the metal.

(i) NH3, NO2. (ii) + 3