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Q. How to evaluate mass number?
An isotope of an element is recognized by its mass number which is the sum of the number of protons and neutrons in the atom's nucleus.
Mass number = number of protons + number of neutrons
When texting the symbol for an isotope write the atomic number and mass number as shown in the following examples.
H atom with one proton and no electrons H atom with one proton and one neutron
In coordination compounds , how to decide whether itss hybridisation will be sp3d2 or d2sp3.. itss based on inner or outer orbital complex but how will we got to know that for ever
what is stereomerism
Aromatic compounds - Homocyclic or Carbocyclic These compounds contain at least one benzene ring, that is a six-membered carbocyclic ring occupying alternate single and double
If hydrogen atom is in an energy level represented by n=4,how many spectral lines are possible in its emission spectrum? Ans) There is a formula for this i.e [ (n 2- n 1 +1)
CH 3 -CHBR-CH 2 -CHCL-CH 3 1 2 3 4 5 Br abd Cl are side chain. numbering is done so that the alphabet that comes first in order get lowest number i.e.,
How to balace equation of redox
priming and foaming define?
Q. What is chlorophyll? A magnesium complex of porphyrin is called chlotophyll. the green colouring material in plants and which is essential for photosynthesis. Hemoglobin
The electronic configuration 1s 2 , 2s 2 , 2p 1 x , 2p 1 z : (1) Oxygen (2) Nitrogen (3) Hydrogen (4) Fluorine Ans: Nitrogen
Number of unpaired electrons in 1s 2 2s 2 2p 3 is: (1) 2 (2) 0 (3) 3 (4) 1 Ans: 3
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