JEE Main & Advanced Chemistry Classification of Elements and Periodicity in Properties / तत्त्वों का वर्गीकरण एवं गुणों में आवर्ति Question Bank

done Numerical Value Type Questions - Periodic Table & Chemical Bonding Total Questions - 29

• question_answer1)
  The bond distance between \[C\,\,-\,\,Cl\] in \[CC{{l}_{4}}\] is \[1.76\,\,\overset{o}{\mathop{A}}\,.\] If atomic radius of C is \[0.77\text{ }\overset{o}{\mathop{A}}\,,\]determine the atomic radius of\[Cl\]. ­­
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• question_answer2)
  The amount of energy released when one million of atoms of iodine in vapour state are converted into \[I-\,\,ions\]is \[4.9\,\,\times \,\,{{10}^{-\,13}}\,J\] according to the reaction. \[I\left( g \right)+{{e}^{-}}\to I-\left( g \right)\] Express the electron affinity of iodine in terms of \[kJ\text{ }mo{{l}^{-1}}\] and eV per atom.
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• question_answer3)
  Calculate the effective nuclear charge \[\left( Z\,* \right)\]for

  (i) Valence shell electrons

  (ii) 3d

  (iii) 3p electrons of bromine atom \[(Z\,\,=\,\,35)\].

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• question_answer4)
  What is the \[\Delta \,H\] of the following reaction? \[Mg(g)+2F(g)\to M{{g}^{2+}}(g)+2{{F}^{-}}(g)orMg{{F}_{2}}(g)\] If electron affinity of \[F\left( g \right)\,\,=\,\,-\,\,328\,\,kJ\,\,mo{{l}^{-1}}\] and First ionisation energy of \[Mg\,\,=\,\,737.7\,\,kJ\,\,mo{{l}^{-1}}\] and Second ionisation energy of \[Mg\,\,=\,\,1451\,\,kJ\,\,mo{{l}^{-1}}.\]
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• question_answer5)
  An ionic compound \[A{{X}_{3}}\,\,(s)\] is formed between a metal A and a non-metal X (outermost shell configuration of \[X\,\,=\,\,n{{s}^{2}}n{{p}^{5}}\]). Find the enthalpy of formation (magnitude) of \[A{{X}_{3}}\,\,(s)\] with the help of the following data. (Non-metal X is found to exist in nature as a diatomic gas)

  \[\Delta {{H}_{sublimation}}\,\,A\left( s \right)\,\,=\,\,100\,\,Kcal\,/\,mol\]

  \[\Delta {{H}_{I.E{{.}_{1}}}}A\left( g \right)\,\,=\,\,60\,\,Kcal\,/\,mol\]

  \[\Delta {{H}_{I.E{{.}_{2}}}}A\left( g \right)\,\,=\,\,150\,\,Kcal\,/\,mol\]

  \[\Delta {{H}_{I.E{{.}_{3}}}}A\left( g \right)\,\,=\,\,280\,\,Kcal\,/\,mol\]

  \[\Delta {{H}_{diss}}\,\,{{X}_{2}}\left( g \right)\,\,=\,\,80\,\,Kcal\,/\,mol\]

  \[\Delta {{H}_{e.g}}\,\,X\left( g \right)\,\,=\,\,-\,110\,\,Kcal\,/\,mol\]

  \[\Delta {{H}_{Lattice\text{ }energy}}\,\,A\,\,{{X}_{3}}\,\left( s \right)\,\,=\,\,-\,470\,\,Kcal\,/\,mol\]

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• question_answer6)
  How many of the following properties show in general an increasing trend when moving down in a group in the modern periodic table. \[{{Z}_{eff}},\]Atomic radius, ionization energy, electron affinity, electronegativity, acidic nature of oxides, acidic nature of hydracids, basic nature of hydroxides
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• question_answer7)
  The number of unpaired electrons in the (Z = 16) VIA or 16th group of the periodic table is :
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• question_answer8)
  How many of the following compounds has \[X-X\] bonds i.e. single covalent bond \[\left( \sigma  \right)\]between two same elements in their molecules \[{{H}_{4}}{{P}_{2}}{{O}_{6}},\,\,{{H}_{4}}{{P}_{2}}{{O}_{7}},\,\,{{N}_{2}}{{O}_{3}},\,\,{{N}_{2}}{{O}_{4}},\,\,{{N}_{2}}{{O}_{5}},\,\,{{\left( HP{{O}_{3}} \right)}_{3}},\]\[{{H}_{2}}{{S}_{2}}{{O}_{3}}\]
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• question_answer9)
  The bond order of the underlined species ; \[\underset{-}{\mathop{NO}}\,HS{{O}_{4}}\]is :
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• question_answer10)
  Consider following compound A to E.

  (a)\[Xe{{F}_{n}}\]

  (b)\[XeF_{^{(n+1)}}^{+}\]

  (c) \[XeF_{\left( n+1 \right)}^{-}\]

  (d)\[Xe{{F}_{\left( n+2 \right)}}\]

  (e) \[XeF_{(n+4)}^{2-},\]

  If value of n is 4, then calculate value of \[''p\,\,\div \,\,q''\]here, \['p'\]is total number of bond pair and 'q' is total number of lone pair on central atoms of compounds A to E.
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• question_answer11)
  The sum of the number of lone pairs of electrons on each central atom in the following species is \[{{\left[ TeB{{r}_{6}} \right]}^{2-}},{{\left[ Br{{F}_{2}} \right]}^{+}},SN{{F}_{3}},\] and \[{{\left[ Xe{{F}_{3}} \right]}^{-}}\] (Atomic numbers: N=7, F=9, S=16, Br=35, Te=52, Xe=54)
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• question_answer12)
  Among \[{{H}_{2}},\,\,H{{e}_{{{2}^{+}}}},\,\,L{{i}_{2}},\,\,B{{e}_{2}},\,\,{{B}_{2}},\,\,{{C}_{2}},\,\,{{N}_{2}},\,\,{{\text{O}}_{2{{\,}^{-}}}},\]and \[{{F}_{2}},\]the number of diamagnetic species is (Atomic numbers: H = 1, He = 2, Li = 3,  Be = 4, B = 5, C = 6, N = 7, 0 = 8, F = 9)
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• question_answer13)
  Among the triatomic molecules/ions, \[BeC{{l}_{2}},\]\[N_{3}^{-},\]\[{{N}_{2}}O,\,\,N{{O}_{{{2}^{+}}}},\,\,{{O}_{3}},\,\,SC{{l}_{2}},\,\,IC{{I}_{{{2}^{-}}}},\,\,{{I}_{{{3}^{-}}}}\] and \[Xe{{F}_{2}},\] the total number of linear molecule(s)/ion(s) where the hybridization of the central atom does not have contribution from the d-orbital(s) is. [Atomic number: S = 16, \[Cl\,\,=\,\,17\], I = 53 and Xe = 54]
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• question_answer14)
  A list of species having the formula \[X{{Z}_{4}}\] is given below \[Xe{{F}_{4}},\,\,S{{F}_{4}},\,\,Si{{F}_{4}},\,\,B{{F}_{{{4}^{-}}}},\,\,Br{{F}_{{{4}^{-}}}},\]\[{{\left[ Cu{{\left( N{{H}_{3}} \right)}_{4}} \right]}^{2+}},\] \[\left[ FeC{{l}_{4}} \right]\left] ^{2-},\,\, \right[CoC{{l}_{4}}{{]}^{2-}}\] and \[{{\left[ PtC{{l}_{4}} \right]}^{2-}}\] Defining shape on the basis of the location of X and Z atoms, the total number of species having a square planar shape is
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• question_answer15)
  The compound(s) with two lone pairs of electrons on the central atom is (are). \[Br{{F}_{5}},\,\,Cl{{F}_{3}},\,\,Xe{{F}_{4}},\,\,S{{F}_{4}}\]
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• question_answer16)
  Give total number of \[B-O\] covalent bonds in\[{{\left[ {{B}_{3}}{{O}_{3}}{{\left( OH \right)}_{4}} \right]}^{-}}ion\]. (Exclude any co-ordinate bond, if any).
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• question_answer17)
  Find percentage ionic character of \['O-Cl'\] bond on Hanny Smith scale?
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• question_answer18)
  Which of the following xenon halides on hydrolysis yields Xe

  (i) \[Xe{{F}_{2}},\]

  (ii) \[Xe{{F}_{4}},\]

  (iii) \[Xe{{F}_{6}},\]

  (iv) \[Xe{{F}_{{{7}^{-}}}}\]

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• question_answer19)
  How many of the following are paramagnetic in nature?

  (i) \[CN\]

  (ii) \[C{{N}^{-}}\]

  (iii) \[C{{O}^{+}}\]

  (iv) \[O_{2}^{-}\]

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• question_answer20)
  If the sum of number of lone pairs and bond pairs in \[XeF_{5}^{\,-}\] are m + n at central atom. Then find the value of m + n.
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• question_answer21)
  The number of a bonds in \[{{P}_{4}}{{O}_{10}}\] is x then \[x/2\]?
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• question_answer22)
  How many compound which has \[p\pi \,\,-\,\,d\pi \] bonds- \[CO_{3}^{2-},\,\,ClO_{4}^{-},\,\,S{{O}_{3}},SO_{4}^{2-},\,\,{{P}_{4}}{{O}_{10}},\,\,NO_{3}^{-},\,\,HCN,\]\[{{[I{{(CN)}_{2}}]}^{-}},\,\,PO_{4}^{3-},\]
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• question_answer23)
  How many number of triatomic sp2 hybridised species has / have bond angle greater than or equal to \[120{}^\circ \,\,?\] \[{{H}_{2}}S,\,\,P{{H}_{3}},\,\,{{H}_{2}}O,\,\,NO_{2}^{-},\]\[CO_{3}^{-\,2},\,\,N{{O}_{2}},\,\,OC{{l}_{2}},\,\,Cl{{O}_{2}}\]
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• question_answer24)
  \[Br{{F}_{3}}\] is a liquid which considerably undergoes self-ionization to form cationic and anionic species. Based on VSEPR theory, number of 90 degree F - Br - F bond angles is........ in anionic species. \[2\,Br{{F}_{3}}\,\,\rightleftharpoons \,\,{{\left[ Br{{F}_{2}} \right]}^{+}}\,\,+\,\,{{\left[ Br{{F}_{4}} \right]}^{-}}\]
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• question_answer25)
  How many \[P\,\,\,\,O\,\,\,\,P\]bonds are present in tricyclometaphosphoric acid,\[{{\left( HP{{O}_{3}} \right)}_{3}}\]?
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• question_answer26)
  Consider the following oxyanions: \[PO_{4}^{3\,-},\,\,{{P}_{2}}O_{6}^{4\,-},\,\,SO_{4}^{2\,-},\,\,MnO_{4}^{-},\,\,CrO_{4}^{2\,-},\,\,{{S}_{2}}O_{5}^{2\,-},{{S}_{2}}O_{7}^{2\,-}\]And find the value of \[R\,\,+\,\,Q\,\,-\,\,P\] Where

  P = Number of oxy anions having three equivalent

  X − O bonds per central atom

  Q = Number of oxy anions having two equivalent

  X − O bonds per central atom

  R = Number of oxy anions having four equivalent

  X − O bonds per central atom

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• question_answer27)
  How many of the following compounds has \[X\,\,-\,\,X\] bonds i.e. single covalent bond \[\left( \sigma  \right)\] between two same elements in their molecules \[{{H}_{4}}{{P}_{2}}{{O}_{6}},\,\,{{H}_{4}}{{P}_{2}}{{O}_{7}},\,\,{{N}_{2}}{{O}_{3}},\,\,{{N}_{2}}{{O}_{4}},\,\,{{N}_{2}}{{O}_{5}},\,\,{{\left( HP{{O}_{3}} \right)}_{3}},\]\[{{H}_{2}}{{S}_{2}}{{O}_{3}}\]
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• question_answer28)
    The bond order of the underlined species ; \[\underline{NO}HS{{O}_{4}}\]is :
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• question_answer29)
  Consider following compound A to E.

  (a) \[Xe{{F}_{n}}\]

  (b)\[XeF_{\left( n+1 \right)}^{+}\]

  (c) \[XeF_{(n+1)}^{\,-}\]

  (d) \[Xe{{F}_{\left( n+2 \right)}}\]

  (e) \[XeF_{\left( n\,+\,4 \right)}^{2\,-}\],

  If value of n is 4, then calculate value of \[''p\,\,\div \,\,q''\]here, \['p'\] is total number of bond pair and \['q'\] is total number of lone pair on central atoms of compounds A to E.
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