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Mdcat-past-papers - UHS - Chemistry Quiz

Filters: Board: UHS | Subject: Chemistry |
81. When 6d orbital is filled, the entering electron goes into:



82. Which element has ground state electronic configuration of 1s2 ,2s2 2p6 , 3s2 3p6?



83. Which of the following electronic configuration is correct for carbon?



84. Which of the following is different in Na ( Z = 11), Mg+2 (Z = 12) and Al+3 (Z = 13)?



85. Which element has the ground state electronic configuration of 1s2, 2s2, 2p6, 3s2, 3p6?



86. What is the proton (atomic number) of an element that has four unpaired electrons in its ground state?



87. The elements for which the valve of ionization energy is low, can:



88. The ability of an atom in a covalent bond to attract the bonding electrons is called:



89. In 'H-F' bond electronegativity difference is '1.9'. What is type of this bond?



90. Among LiCl, BeCl₂, NaCl, CsCl, the compounds with the greatest and the least ionic character respectively are:



91. Which statement describes the conversion of magnesium atoms to magnesium ions for ionic bond formation with chlorine?



92. Why dimer of Aluminium chloride is formed:



93. Which of the following has a coordinate bond?



94. According to valence shell electron pair repulsion theory, the repulsive forces between the electron pairs of central atom of molecule are in the order:



95. Which of the following molecule has largest number of shared pair of electrons?



96. AB₄ type with no lone pairs geometry enables to form which shape of molecule?



97. Which of the following is NOT a feature of Valence Shell Electron Pair Repulsion theory?



98. The paramagnetic character of a substance is due to:



99. When the two partially filled atomic orbitals overlap in such a way that the probability of finding electron is maximum around the line joining the two nuclei, the result is the formation of:



100. Which option shows all the molecules with bond angle 109.5°?



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