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define it
GROUP 13: ALUMINUM TO THALLIUM The substance aluminum, indium, gallium and thallium have valence electron configurations (ns) 2 (np) 1 and for the lighter elements their chemis
Iso-electronic species is: (1) F - ,O -2 (2) F - , O (3) F - , O + (4) F - , O +2 Ans: F - ,O- 2
The energy of an electron in orbit of hydrogen atom is : (1) 13.6/n 4 x eV (2) 13.6/n 3 xeV (3) 13.6/n 2 xeV (4)13.6/nx eV Ans:
atomic radius and compared its atomic radius to the other radiuss in its group
240 g of water at 20 degree C are mixed with a sample of iron at 500 degree C. The final temperature of the system is 42 degree C. Find the mass of the iron sample
A solution contains an unknown amount of osmium at the µg/g level, or below. Chemically pure osmium (Os) may be separated from the solution, but the chemical yields are variable an
Which have the same number of S electrons as the d - electrons in fe2+
Examples
what are the laboratory apparatuses used in inorganic chemistry ?
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