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why is the valence electron 4s2 in the elelment Sc21 and not 3d1?
what are the oxides and halides of d-block elements? mention them groupwise and comment on the stability of their oxidation state.
Explain about the interstitial defects An interstitial is an atom that occupies a place outside the normal lattice position. It might be the similar type of atom as the others
Silicon has 4 electrons in the outermost orbit. In forming the bonds: (1) It gains electrons (2) It loses electrons (3) It shares electrons (4) None of these Ans: I
The difference among Threshold energy and average energy of the molecules is known as activation energy.
The compound in which cation is isoelectronic with anion is : (1) NaCl (2) CsF (3) NaI (4) K 2 S Ans: K 2 S
. Explain the construction and working of Calomel electrode
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What is the packet of energy called: (1) Electron (2) Photon (3) Positron (4)Proton Ans: Photon
Most ligands have a nonbonding electron pair that may react as a donor to empty orbitals on the metal atom. In ligands known as π acids or π acceptors a donor-acceptor communic
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