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How many unpaired electrons are present in Ni2+ cation (atomic number = 28):
(1) 0
(2) 2
(3) 4
(4) 6
Ans: 2
4 NH3 + 5 O2 --> 4 NO + 6 H2O How many grams of NO are actually produced when 60.02 grams of ammonia are allowed to react with 96.00 grams of oxygen? ((This is a limiting reactant
Q. Physical Properties of group16? Similar to the groups discussed earlier. The metallic character in Group 16, increases with increasing atomic number. Oxygen and sulphur are
the nitride ion in lithium nitride is composed of 7 protons + 10 electrons. how?
the given solution contains 2.5g of laundry soap dissolved per 250 cubic cm.determine the amount of free alkali in 350 cubic cm.
Redox systems in bioinorganic chemistry
Calculate the ratio of d number of molecules in two energy levels at 27''c given E2=9.75x10"-13erg/mol E1=6.95X10"-13erg/mol g1=2 g2=3
Why are the lanthanides and actinides series call the f-block
WHAT IS THE EQUIVALENT WEIGHT OF Mg(HCO3)2
Aluminium metal is frequently used as a reducing agent for the extraction of metals such as chromium, manganese etc. Explain why? Ans) Aluminium is an highly electropositive metal
Entropy (S) is a molecular 'disorder', or more precisely 'the number of microscopic arrangements of energy possible in a macroscopic sample'. Entropy depends strongly on the state
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