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Q. Illustrate modern atomic model of De Broglie? 1. Electrons inhabit the space surrounding the nucleus and can exist in several discrete principal energy levels each designate
Q. Illustrate Oxidation States of f-block? The addition of the first three ionisation energies of the lanthanides is comparatively low, so the elements are highly electropositi
Free radical and Aromatic rearrangement Migration or Rearrangement to free radical species or Free radical rearrangement: Those rearrangement reactions where the migr
The number of unpaired electrons in an O 2 molecule is: (1) 0 (2) 1 (3) 2 (4) 3 Ans: 2
Pauli's exclusion principle states that: (1) Two electrons in the same atom can have the same energy (2) Two electrons in the same atom cannot have the same spin (3) The
name the compound LiH
The energy of second Bohr orbit of the hydrogen atom is -328 kJ mol-1, hence the energy of fourth Bohr orbit would be: (1) - 41 kJ mol -1 (2) -1312 kJ mol -1 (3) -164
Q. In 1982, the International Union of Pure and Applied Chemistry recommended that the value of the standard pressure p o be changed from 1 atm to 1 bar. This change affects the
Table gives some halides and oxides of the 3 d series elements, selected to show the range of stable oxidation states. These follow the similar trends as required in aqueous chem
Principle underlying the quantitative analysis: In flame photometry, the thermal energy from flame is utilized to convert the analyte within gaseous atoms and then to excite t
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