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An electron has principal quantum number 3. The number of its (i) sub-shells and (ii) orbitals would be respectively: (1) 3 and 5 (2) 3 and 7 (3) 3 and 9
The total number of valence electrons in 4.2 gm N - 3 of ion is ( N A is the Avogadro's number): (1) 1.6N A (2) 3.2N A
What are distinguishing characteristics of metallic bonding? Metallic state can be visualized like an array of positive ions, with a common pool of electrons to
Q. Define Conjugate acid-base pair and buffer? Buffers are substances that resist changes in pH. To "balance pH" means to buffer. Weak acids and bases make good buffers.
# what are supersaturated vapours
Elements of Group 13 are less metallic than those of groups 1 and 2. Within the group, there is a variation in metallic character. Boron, the smallest element in this group is a no
Q. Explain about Chemistry and Matter? Chemistry is the study of matter as well as the changes that it undergoes. Matter is anything which has mass and takes up space. Mas
fermiun (n = 100)
An Lewis acid-base dissociation of the bromide-essentially an SN1 reaction-gives an a-hydroxy carbo-cation, which is, by resonance, also the conjugate acid of acetophenone. Deproto
How many spyro moleculesr are there Ans) n numbers
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