NAT I Medical Chemistry With Answers

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NAT I Medical Chemistry

Sr. # Questions Answers Choice
1 Among the alkaline earth metals the element forming predominantly covalent compounds is Be Mg Sr Calcium
2 Hydrogen chloride molecule contains Covalent bond Double bond Co-ordinate bond Electrovalent bond
3 Water (H2O) is liquid while hydrogen sulphide (H2S) is a gas because Water has higher molecular weight Hydrogen sulphide is a weak acid Sulphur has high electronegativity than oxygen Water molecules associate through hydrogen bonding.
4 The valence orbital configuration of an element with atomic number 23 is 3d<sup>5</sup> <span style="font-size: 14.44444465637207px;">3d</span><sup>3</sup>,&nbsp;<span style="font-size: 14.44444465637207px;">4s</span><sup>2</sup> <span style="font-size: 14.44444465637207px;">3d</span><sup>3</sup>,<span style="font-size: 14.44444465637207px;">4s</span><sup>1</sup>,<span style="font-size: 14.44444465637207px;">4p</span><sup>1</sup> <span style="font-size: 14.44444465637207px;">3d</span><sup>2</sup>,<span style="font-size: 14.44444465637207px;">4s</span><sup>2</sup>,<span style="font-size: 14.44444465637207px;">4p</span><sup>1</sup>
5 Which quantum number is sufficient to describe the electron is hydrogen atom? / n m s
6 When electrons revolve is stationary orbits There is no change in energy level They vecome stationary They are gaining kinetic energy There is increase in energy
7 The symbol of the element whose atoms have the outer most electronic configuration 2s2 2p3 is N Li P Na
8 The number of electrons in the M shell of the element with number 24 is 24 12 13 8
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