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The hydride ions H- are isoelectronic with: (1) Li (2) He + (3) He (4) Be Ans: He
When an electron drops from a higher energy level to a low energy level, then: (1) Atomic number decreases (2) Energy is absorbed (3) Atomic number increases (4) Energ
Overall reaction is H+ + I- +H2O2 -> H2O +HIO. If you wanted to increase the rate of the overall reaction, would it be better to increase the concentration of H+ or I-. Why?
Which one of the following explains light both as a stream of particles and as wave motion: (1) Diffraction (2) γ= h/p (3) Interference (4) Photoelectric effect
what is metallurgy
assignment
Why a covalent bond is directional? Covalent bond is formed as a result of pairing of two electrons in atomic orbitals of two atoms. Bond then must lie along the direction of
Coordination number and geometry Binary compounds are ones with two different elements present. 'Simple' crystal structures can be classed as ones in which each atom (or
give the classification of alcohpl
Amongst the following covalent bonding is found in: (1) Sodium chloride (2) Magnesium chloride (3) Water (4) Brass Ans: Water
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