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A/C to the formula e=hc/wavelength the energy of a photon is directly proport...
i do not understand this answer properly so please can you explain me this an...
What is the meant by electrovalent linkage. Ans.A.
can you give reasons also that why these answers are correct so that I can un...
How Salol and Aspirin require preparation of Benzene?
What is the meaning of FRACTIONAL CRYSTALLIZATION, GASIFICATION and SYNTHESIS...
when alpha particle is emitted mass number decreases by 4
as helium is smaller in size it should have more electron affinity
can you plz give me the equation regarding this question?
can you give me some more questions in this chapter friends who are practi...
the bond is H-O-O-H. how can it be sp3; the hybridization of O??
is molecularity a theoretical value or experimental value?
NH3 is a covalent bond but ans isco ordinate bond
Mam for Zn +2 is = 3d 10 configuration and Mn +2 is = 3d 5 configuration so i...
how elimination reaction takes place when ethyl iodide heated with alcoholic ...
Difference b/w hallucinogens, narcotics,tranquillers(sedatives,anti teepees s...
A match box doesn't have all sides equal. So how can it be cubic? The answer ...
how it is +6 wrong it s correcyt answer will be +1
lithium has the small size so its mobility should be high but whyit has small...
E=hc\lamda C is velocity so directly proportional to velocity
Please could you display the answers for these question papers?
what is the relation between energy and wavelength
outer E.C. of boron is 2p1 and outer E.C. of li is 2s1 thats why li has highe...
water at zero degree is in solid state so, in solid state how ans can be 4deg...
whichcolour shud be observed to see orange light??
there are present 7 carbon atoms,then how this is hexanoic acid
can u explain this question . i did not understand the question
how the nuclear charge got higher? plz explain in details
when 1 alfa particle emits out then what is the effect on atomic no. and atom...
how can we find valency provided with atomic weight and equivalent weight?
isn't beta particle equivalent to electron ? if so the ans must be opt.a
Does Fr has least Ionisation energy and least electronegative character?...
emusifying agent must have hydrophilic and lipophilic(hydrophobic)end for its...
in ncert book its answer is trigonal unit cell.so give its explanation
none is correct and the given answer is absolutely incorrect
can you just give the explanation for the given question?
Explanation regarding Ellingham diagram based questions
please explain how to answer this type of question
what is meant by isomorph diff between isomorph and isobar
for gamma rays penetration piower is more so as per rules it should have less...
for gamma rays penetration piower is more so as per rules it should have less...
is configuration 7s can extend its electrons to 5?
how can s subshell be filled by 5 electrons?? plz explain
ammonia(NH3)has sp3 hybridization so it has 1lone pair hence it shape is pyra...
s orbital has only 2 electron but answer is given 7s5 how
what are the colours given by phenophthalein with respect to ph values ?
How could s accommodate 5 electrons instead can it accomdate maximum of 2 ele...
if neutron is bombardment particle then how come the atomic number decreased ...
P2O5 WHEN REACT WITH COLD WATER GIVE H3PO4 AS WELL AS HP03 BUT ANS IS HPO3 ...
How to find vapour density & number of moles formed in equilibrium
How comes it 7s5 7p6 a valence shell configuration of radioactive element?
Nitrogen is the 7th element and it need 3 electrons to complete octet rule so...
carbon cant exceed its covalency beyond 4,then how CF6 could be formed?
How to identify wether the reaction is exothermic or endothermic, spontaneous...
A compound CH3-CH2-Br is treated with alcoholic KOH to form compound X. Then ...
If [_92U^236] nucleus emits and [alpha] -particle, the remaining nucleus...
how ionisation of atom responsible for continum of spectrum?
what of the following has an electrovalent linkage
the enetrgy released in an atommic bomb explosion is mainly due to
mass number of reactants does not equals mass number of produts then how it c...
can u explin me now , i will be very thankful to u mam
as we go across the period the density increases but along the group it decre...
as we go across the period the density increases but along the group it decre...
