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Which of the following sequence is correct as per Aufbau principle:
(1) 3s < 3d < 4s < 4p
(2) 1s < 2p < 4s < 3d
(3) 2s < 5s < 4p < 5d
(4) 2s < 2p < 3d < 3p
Ans: 1s < 2p < 4s < 3d
a sample of CaCo3 and MgCo3 weighing 192g is ignited to constanr weight of 104 gm . what is the composition of mixture ?
Which one is least ionic in the following compounds: (1) Agcl (2) Kcl (3) Bacl 2 (4) Cacl 2 Ans: Agcl
Coordination complexes are so pervasive that the structure and reactions are defined in many ways, sometimes confusingly. The atom within a ligand that is bonded to the central ato
The phosphate of a metal has the formula MHPO 4. The formula of its chloride would be: (1) MCl (2) MCl 2 (
Uses of Cellulose - biomolecules (i) Cellulose is used as such in the manufacture of cloth (cotton), canvas and gunny bags (jute) and paper (wood, bamboo, straw, etc.) (ii)
How can the enthalpy of the hydrogenation of benzene be measured from its enthalpy of combustion and the enthalpies of combustion of cyclohexane and hydrogen? Make use of Hess's la
Shielding of proton by electrons
Approximate the torque and power necessary to rotate the inner 20 cm diameter cylinder shown in Figure 1. SAE 10W-30 oil at 20°C fills the gap. Assume a linear velocity profile.
what are ion? under what conditions are they produced?
The number of electrons in the nucleus of C 12 is (1) 6 (2) 12 (3)0 (4)3 Ans: 0
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