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Energy of atomic orbitals in a particular shell is in the order: (1) s (2) s> p > d > f (3) p (4) f > d > s >p Ans: s
Borazole is very stable because it is aromatic; each nitrogen contributes two p electrons and each boron contributes zero electrons, for a total of six p electrons in the aromatic
Q. Describe about groups or families in periodic table? Every element may be represented by a one or two letter symbol. In the middle of nineteenth century a Russian chemist Dm
what is this
How alkanes are prepaired?
The frequency of a wave of light is 12x 10 14 s -1 . The wave number associated with this light is: (1) 5x10 -7 m (2) 4x 10 -8 cm -1
Haber-Bosch Process Ammonia is one of the most significant intermediates. It is used, for example, for the production of fertilizers. Usually, ammonia is formed from hydrogen a
Which of the following has the least energy: (1) 2p (2) 3p (3) 2s (4) 4d Ans: 2s
Q. Chemical Properties of group16? Oxygen is slightly less reactive than the halogens but reacts directly with nearly all the elements except the noble gases, the halogens and
which one is more stable cis or trans
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