CHM101
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A. Ortho and para-hydrogen exemplifies a type of isomerism referred to as __________ isomerism.
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B. The alkali metals belong to the _______ elements
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C. Atoms of an element which have the same atomic number but different mass number is known as _________
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D. __________ is one of the isotopes of hydrogen whose neutron number is zero.
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E. Which of these statements is not true of metallic hydrides? _______
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F. The elements which the extra electron enters(n2)f orbitals are called ________
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G. Fuel cell have advantage over power plants in that its efficiency is _________
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H. Ionization energy ________ down the group within the alkali metals
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I. Which of these is not a covalent hydride? ______
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J. An element that shows some properties similar to alkali metals and some others similar to those of halogens is most likely to be _________
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K. _______ is a compound formed when hydrogen combines covalently with non-metals.
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L. Hydride ion is unusually _________ with respect to size
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M. The f-blocks elements are otherwise known as ________
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N. Hydrogen can be obtained economically as a bi-product in the electrolysis of a compound called ________
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O. Which of these elements has the electronic configuration of $1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}3d^{10}4s^{1}$? __________
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P. Which property was used by Mendeleev to classify elements?_______________
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Q. Magnesium hydride is an example of ________ hydride.
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R. Which of these elements behave partly as the alkaline metals as well as a halogen element? _________
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S. The tendency of an atom to attract towards itself shared electron pair of a bond is known as ________
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T. Which of these statements is not true of metallic elements?_________
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U. The phenomenon in which a metal is surrounded by solvent molecules is called ________
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V. Which of the isotopes of hydrogen is radioactive?_________
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W. Which of these periods of the periodic table has only eight elements? ________
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X. Hydrogen is discharged at ___________ electrode during the electrolysis of brine
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Y. All these can be used as raw materials for the production of oxygen except ______
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Z. How many electrons are in potassium atom? __________
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AA. The most abundant metal in sea water is called ______.
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AB. The presence of hydrogen bond in most molecules is responsible for the following EXCEPT ________
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AC. Inner transition elements are otherwise known as ________
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AD. The stability of alkali salts depend on ______
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AE. The percentage of deuterium in natural occurring hydrogen is ________
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AF. _________ metals react with sulphur to form simple sulphides and polysulphides.
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AG. $1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}3d^{7}4s^{2}$ is the electronic configuration for an element with atomic number ___________
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AH. _________ is a radioactive isotope of hydrogen obtained on a large scale by irradiation of Li/Mg alloy of $ LiFe{3}$ with slow neutrons.
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AI. The name given to group 2 elements in the periodic table is ________
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_____states that as far as possible in a given atom in the ground state, electrons in the same sub shell will occupy different orbitals and will have parallel spins.
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AK. Which of the following is not true as we move down a group of s and p-block elements in the periodic table? ________
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AL. Alkaline metals are extracted mainly by _________
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AM. Elements which achieve a stable noble gas configuration by accepting just one electron are collectively called _______
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AN. Hydrides of alkali metals react with water to liberate which of these?______________
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AO. Which of these alkalis has the most stable fluoride?______________
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AP. Within the alkali metals, atomic size _________ down the group.
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AQ. How many elements are there in period 6 of the periodic table ? __________
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AR. The attractive force which binds hydrogen atom of one molecule with an electronegative atom of another molecule is known as _________
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AS. Which of these alkali metals is the most electro-positive?______________
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AT. Berylium , an alkaline earth metal belongs to the _______ block elements.
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AU. Why was Newlands law of octaves rejected? ____________
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AV. Stability of alkali salts depends on which of the following?_______________
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AW. A consequence of _______ is the formation of a chelate ring.
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AX. Halogens have ________ electron affinity
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AY. Lithium in the form of lithium stearate is used for the production of a substance known as __________ which minimizes friction between moving parts.
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AZ. Increase in principal quantum number(n) means _________ of the atomic radii
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