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The number of unpaired electrons in 1s 2 2s 2 2p 4 is: (1) 4 (2) 2 (3) 0 (4) 1 Ans: 2
AS THIS ALKALI METALS HAS LARGE SIZE AND LESS IONISATION ENERGY THEY LOSE THEIR OUTERMOST ELECTRON EASILY. PHOTOELECTRIC EFFECT MEANS EJECTION OF ELECTRONS FROM A METAL WHEN THEY
Q. Illustrate Oxidation States of f-block? The addition of the first three ionisation energies of the lanthanides is comparatively low, so the elements are highly electropositi
name the physical state of matter which can be easily compressed.
what are imperfection in solids
define seliwanoffs test reaction
The ratio of the concentration of the products raised to its stoichiometric coefficient to the concentration of the reactants raised to its stoichiometric coeff. Mostly, higher th
Number of electron does species have The H2 2- ion can be conceived to result from the combination of two hydride ions (H-). This species have four electrons; two occupy the b
1. Express 95 mg/l of Ca 2+ as milligrams per liter of CaCO 3 . 2. Express 221 mg/l of Ca(HCO 3 ) 2 as equivalents per liter of CaCO 3 . 3. Determine the concentration o
Can we vary the pressure while phases remain in equilibrium? Consider a system containing only NH 4 Cl(s), NH 3 (g), and HCl(g). Assume that the equilibrium NH 4 Cl(s) ↔ NH
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