Magnesium Hydroxide এর কাজ, ব্যবহারের নিয়ম

Calcium (Ca) and strontium (Sr) are expected to show chemical reactions similar to magnesium (Mg). This is because the number of valence electrons (2) is same in all these three...

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

The first ionization enthalpy of sodium is more than that of magnesium. This is primarily because of two reasons: a. The atomic size of sodium is greater than that of magnesium b....

Due to high ionisation enthalpy of Be and Mg.

On heating an alkali earth metal or its salt, the electrons are excited easily to higher energy levels because of absorption of energy. When these electrons return to their ground...

Magnesium burns in air with a dazzing light to form MgO Quick lime combines with silica to form slag(CaSiO3) When chlorine is added to slaked lime we get bleaching powder. Calcium nitrate on...

(i) Sodium oxide                 → Na2O  (ii) Aluminium chloride       → AlCl3  (iii) Sodium suphide           → Na2S  (iv) Magnesium hydroxide → Mg(OH)2

Number of moles 12 / 24 = 0.5 mol 

A Mg2+ ion and Mg atom differ by two electrons.  103 moles of Mg2+ and Mg atoms would differ by  103 × 2 moles of electrons  Mass of 2 ×103 moles of electrons...

‘C’ has made the desired solution  Mass by volume % = Mass of solute / Volume of solution×100    = 50 / 100×100    = 50 % mass by volume