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The electronic configuration of an element with atomic number 7 i.e. nitrogen atom is;
(1) 1s2, 2s1, 2p3x
(2) 1s2, 2s2, 2p2x, 2p1y
(3) 1s2, 2s2, 2p1x, 2p1y 2 p1z
(4) 1s2, 2s2, 2p1x, 2p2y
Ans: 1s2, 2s2, 2p1x, 2p1y 2 p1z
The ratio between the neutrons in C and Si with respect to atomic masses 12 and 28 is: (1) 2 : 3 (2) 3 : 2 (3) 3 : 7 (4) 7 : 3 Ans: 3 : 7
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When an electron jumps from lower to higher orbit, its energy : (1) Increases (2) Decreases (3) Remains the same (4) None of these Ans: Increases
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Two element have electronegativity of 1.2 and 3.0. Bond formed between them would be: (1) Ionic (2) Polar covalent ( 3) Co-ordinate (4) Metallic A ns: Ionic
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Quantitative elemental analysis: The instrument used for AFS consists of atom reservoir that might be a flame or a furnace etc., a basic source emitting the features absorptio
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