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The atomic number of an element is 17. The number of orbitals containing electron pairs in its valence shell is:
(1) Eight
(2) Six
(3) Three
(4) Two
Ans: Three
what is cause of chemical combination?
Borosilicate glass: in this boric anhydride is used in place of lime. This glass generally contains 75-81% silica, 10-13.5% B 2 O 3 , 4.5-6% Na 2 O and 2-5% Al 2 O 3 . Sometimes Z
What are the effects on transport number?
why methane does not absorb IR radiation?
Among the bonds formed by a chlorine atom with atoms of hydrogen, chlorine, sodium and carbon, the strongest bond is formed between (1) H- cl
diagonal relationship between b ans si
assigment work of crossion
Why NH4Cl and NH4OH are added to the test solution?
how redox reaction influencing in everyday life
Free-radical mechanism: Free-radical polymerisation is started by organic peroxide or other reagents that decompose to give free radicals.
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