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numbering of groups from 1 to 18 in the IUPAC long form periodic table is done according to their atomic number and similar properties with similar valency. And each group has been named an unique...
Dear Kirti, structure here we would not be able to draw due to attachment problem. U can google them but. . But i could say that forst structre geometry would be Octahederal and second would be too...
Carbanions .i.e C - has one anion that means it has two elctrons and three bonding pairs. And every bond pairs share two electrons. Hence in total or summing up it has 6 elctrons to share and 2...
We know eq. wt. of H2SO4= 50 meq. = eq. wt. of NH3 Therfore mass of ammonia = 50 meq x 50/1000 = > 0.85 gm. Reaction eqns. would be: 2NH3 + H2SO4 --> (NH4)2SO4 from mole – mole analysis, also if u...
would be Alcl3 volatile chloride so Calculate first molar mass of Alcl3. as the informattion is provided valency +3 is for Al and hence atomic mass 27. therefore, V.D = molar mass of Alcl3/2
From wave number formulae: 1/k = Rz^2*(1/2^2 – 1/5^2) 1/k = R*1^2*(1/4 – 1/25) 1/k = 21R/100 k = 100/21R f = c/k put he k value.
Proceed element wise, and write all their chemical reactions with other elements/commpounds and then try to memorize them. This would not lead U to get mixed up all.
Graphite is sp2 hybridized, and the sp2 hybrid orbitals participate in covalent bond formation, the unhybridized p-orbital participates in pi-bonding. . Graphite has delocalized pi-electrons over the ...
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in group going down, inert pair effect increases as d and f orbitals are being introduced and they are having worst poor shielding effect, and thus s and p orbitals becomes dominant in penetrating.
Fractiona values bond order jjust indicates and reveals the unstability and nothing. But all it is important is that whose bond order has maxium of MO. wheteher it is 2.5 or 2 2.5 bond order would...
atoms of same elements are same in all respects and atoms of different elements are diferent in all respect. is true Dalton’s Postulate. .i.e. atoms are same in shape, size and identical of same...
@ mahak mandaleev classified the elements as their periodic function of atomic masses , his periodic table fails due to the following factors . 1- position of hydrogen – its property will be resemble ...
Dear student Basic strength is directly proportional to the amount of OH- ions released per unit volume by aqueous solution of a base.
@ natasha the aerated water bottles means the excess amount of oxygen and minerals are present in the water. which dissolved under certain pressure and if this pressure suddenly decrease due to...
Dear student OH- is one way of categorising basic character (accoding to Arrhenius theory) but the actual meaning of basicity comes from the fact that any specie having the tendency to abstract proton...
i n BF3 the central atom B has six bonding electrons and a vacant 2p orbital, each F atom has 3 fulfilled 2p orbitals (lone e-pairs). Back bonding occurs between fulfilled 2p orbital of F and vacant...
@ anikesh the geometry of Ni(c o)4 is tetrahedral , and the geometry of Ni9pph3)2cl2 are square planer . Reason – ni(co) 4 is a unusual complex , it has ni in 0 oxidation state , thus there are 8...
@ navin This is an easy ques , all the value are mentioned in the question the only thing is u have to substitute that correctly , for the term m2 acc to the question m1v1/n1= m2v2/n2 so, by...
@ siddharth I will give you the approach on how to solve the problem , rest u have to calculate the value . frst of all can u recall the formula ?? deltaE=-RH(1/nf square – 1/ni square ) apply that...
@ nik can u able to recall a formula in the solution chapter , the formula is delta Tf = i*Kf*m. where t(f) is the freezing point , i is the vant hoff factor kf is the depression constant and m is...
@ priyadarshini Silicon is a metal , so, it cannot be either acidic , besic or amphoteric . if you are talking about the silicon dioxide , which is the oxide form of silicon then here are the answer...
@ sakshi electron gain enthalpy is the amount of energy released when an isolated gaseous atom accept an electron , to become monovalent gaseous anion . if a body have -ve tendency accept , then its...
@ suryansh can u able to recall the formula like the below n(wavelength)=circumferenc of orbit. this is the formula for calculating the energy of a electron if the electron is in a orbit . so,by...
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