Periodic Table & Periodicity PYQs Set 7 (PDF)

Set 7 of 11 · Questions 181-210 of 327

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Mere Teacher · Previous Year Questions JEE Main Chemistry · Periodic Table & Periodicity · Set 7 (Q181-210)
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181. $To which group of the periodic table does an element having electronic configuration [Ar] 3 d^{5} 4 s^{2} belong?$ (1) $Second$ (2) $Fourth$ (3) $Seventh$ (4) $Third$ 182. $Statement-1: P b^{4 +} compounds are stronger oxidizing agents than S n^{4 +} compounds Statement-2: The higher oxidation states for the group 14 elements are more stable for the heavier members of the group due to 'inert pair effect'.$ (1) $Statement-1 is True, Statement-2 is True; Statement-2 is a correct explanation for Statement-1.$ (2) $Statement-1 is True, Statement-2 is True; Statement-2 is NOT a correct explanation for Statement-1$ (3) $Statement-1 is True, Statement-2 is False$ (4) $Statement-1 is False, Statement-2 is True$ 183. $Given below are two statements : Statement I : In group 13, the stability of +1 oxidation state increases down the group. Statement II : The atomic size of gallium is greater than that of aluminium. In the light of the above statements, choose the most appropriate answer from the options given below :$ (1) $Both Statement I and Statement II are correct$ (2) $Statement I is incorrect but Statement II is correct$ (3) $Both Statement I and Statement II are incorrect$ (4) $Statement I is correct but Statement II is incorrect$ 184. $The correct order of electron gain enthalpy with negative sign of F, Cl, Br and I, having atomic number 9, 17, 35 and 53 respectively, is:$ (1) $F > Cl > Br > I$ (2) $Cl > F > Br > I$ (3) $Br > Cl > I > F$ (4) $I > Br > Cl > F$ 185. $Given below are two statements: Statement I: H_{2} Se is more acidic than H_{2} Te Statement II: H_{2} Se has higher bond enthalpy for dissociation than H_{2} Te In the light of the above statements, choose the correct answer from the options given below:$ (1) $Both Statement I and Statement II are true$ (2) $Statement I is true but Statement II is false$ (3) $Both Statement I and Statement II are false$ (4) $Statement I is false but Statement II is true$ 186. $The correct sequence of electron gain enthalpy of the elements listed below is A. Ar B. Br C. F D. S Choose the most appropriate from the options given below:$ (1) $C > B > D > A$ (2) $A > D > B > C$ (3) $A > D > C > B$ (4) $D > C > B > A$ 187. $The process that is NOT endothermic in nature is$ (1) $A r_{(g)} + e^{-} \to A r_{(g)}^{-}$ (2) $H_{(g)} + e^{-} \to H_{(g)}^{-}$ (3) $N a_{(g)} \to N a_{(g)}^{+} + e^{-}$ (4) $O_{(g)}^{-} + e^{-} \to O_{(g)}^{2 -}$ 188. $The increasing order of the ionic radii of the given isoelectronic species is:$ (1) $C l^{-}, C a^{2 +}, K^{+}, S^{2-}$ (2) $S^{2-}, C l^{-}, C a^{2 +}, K^{+}$ (3) $C a^{2 +}, K^{+}, C l^{-}, S^{2-}$ (4) $K^{+}, S^{2-}, C a^{2 +}, C l^{-}$ 189. $Electronic configuration of four elements A, B, C and D are given below: (A) 1 s^{2} 2 s^{2} 2 p^{3} (B) 1 s^{2} 2 s^{2} 2 p^{4} (C) 1 s^{2} 2 s^{2} 2 p^{5} (D) 1 s^{2} 2 s^{2} 2 p^{2} Which of the following is the correct order of increasing electronegativity (Pauling's scale)?$ (1) $D < A < B < C$ (2) $A < B < C < D$ (3) $A < C < B < D$ (4) $A < D < B < C$ 190. $Given below are two statements: Statement I: K > Mg > Al > B is the correct order in terms of metallic character. Statement II: Atomic radius is always greater than the ionic radius for any element. In the light of the above statements, choose the correct answer from the options given below$ (1) $Both Statement I and Statement II are true$ (2) $Both Statement I and Statement II are false$ (3) $Statement I is false but Statement II is true$ (4) $Statement I is true but Statement II is false$ 191. $The ions S^{2 -}, Cl^{-}, K^{+}, Ca^{2 +} are isoelectronic. Their ionic radii show$ (1) $a decrease from S^{2 -} to C l^{-} and then increase from K^{+} to C a^{2 +} .$ (2) $an increase from S^{2 -} to C l^{-} and then decrease from K^{+} to C a^{2 +} .$ (3) $a significant decrease from S^{2 -} to C a^{2 +}$ (4) $a significant increase from S^{2 -} to C a^{2 +}$ 192. $Assertion (A) : While going from left to right of the periodic table, the atomic size decreases more rapidly for the 3d-series compared to the 4f-series of elements. Reason (R) : 3d-electrons experience lesser shielding than 4f-electrons.The correct answer is:$ (1) $Both (A) and (R) are correct and (R) is the correct explanation of (A)$ (2) $Both (A) and (R) are correct, but (R) is not the correct explanation of (A)$ (3) $(A) is correct but (R) is not correct$ (4) $(A) is not correct but (R) is correct$ 193. $The correct order of electron gain enthalpy of N, O, Cl, Al is$ (1) $Cl < N < O < Al$ (2) $Al < N < O < Cl$ (3) $O < N < Al < Cl$ (4) $N < O < Cl < Al$ 194. $The electronic configuration which is associated with highest first ionisation enthalpy is:$ (1) $[Ne] 3 s^{2} 3 p^{2}$ (2) $[Ne] 3 s^{2} 3 p^{3}$ (3) $[Ne] 3 s^{2} 3 p^{4}$ (4) $[Ne] 3 s^{2} 3 p^{1}$ 195. $An element has [Ar] 3 d^{1} configuration in its +2 oxidation state. Its position in the periodic table is$ (1) $period-3, group-3$ (2) $period-3, group-7$ (3) $period-4, group-3$ (4) $period-3, group-9$ 196. $The correct order in which the first ionization potential increases is$ (1) $K, Be, Na$ (2) $Be, Na, K$ (3) $Na, K, Be$ (4) $K, Na, Be$ 197. $Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R. Assertion A : H_{2} Te is more acidic than H_{2} S . Reason R: Bond dissociation enthalpy of H_{2} Te is lower than H_{2} S . In the light of the above statements. Choose the most appropriate from the options given below.$ (1) $Both A and R are true but R is NOT the correct explanation of A.$ (2) $Both A and R are true and R is the correct explanation of A.$ (3) $A is false but R is true.$ (4) $A is true but R is false.$ 198. $Four successive members of the first row transition elements are listed below with their atomic numbers. Which one of them is expected to have the highest third ionisation enthalpy ?$ (1) $Vanadium (Z = 23)$ (2) $Chromium (Z = 24)$ (3) $Iron (Z = 26)$ (4) $Manganese (Z = 25)$ 199. $What will be the IUPAC symbol and name for the element with atomic number 123?$ (1) $Unt and unniltrium$ (2) $Ubq and unbiquadium$ (3) $Ubt and unbitrium$ (4) $Unb and unnilbium$ 200. $The electron negativity of aluminium is similar to:$ (1) $Carbon$ (2) $Beryllium$ (3) $Boron$ (4) $Lithium$ 201. $Group-13 elements react with O_{2} in amorphous form to form oxides of type M_{2} O_{3} (M = element). Which among the following is the most basic oxide?$ (1) $A 1_{2} O_{3}$ (2) $B_{2} O_{3}$ (3) $T 1_{2} 0_{3}$ (4) $G a_{2} O_{3}$ 202. $The set representing the correct order of ionic radius is:$ (1) $N a^{+} > L i^{+} > M g^{2 +} > B e^{2 +}$ (2) $L i^{+} > N a^{+} > M g^{2 +} > B e^{2 +}$ (3) $M g^{2 +} > B e^{2 +} > L i^{+} > N a^{+}$ (4) $L i^{+} > B e^{2 +} > N a^{+} > M g^{2 +}$ 203. $Pauling’s electronegativity values for elements are useful in predicting$ (1) $polarity of the molecules$ (2) $position in the E.M.F. series$ (3) $coordination numbers$ (4) $dipole moments.$ 204. $An element ' E^{’} has the ionisation enthalpy value of 374 kJ mol^{- 1} .' E' reacts with elements A, B, C and D with electron gain enthalpy values of - 328, - 349, - 325 and - 295 kJ mol^{- 1}, respectively. The correct order of the products EA, EB, EC and ED in terms of ionic character is :$ (1) $ED > EC > EB > EA$ (2) $EA > EB > EC > ED$ (3) $EB > EA > EC > ED$ (4) $ED > EC > EA > EB$ 205. $Which of the following elements have half-filled f-orbitals in their ground state ? (Given : atomic number Sm = 62; Eu = 63; Tb = 65; Gd = 64, Pm = 61) A. Sm B. Eu C Tb D. Gd F. Pm Choose the correct answer from the options given below:$ (1) $B and D only$ (2) $A and E only$ (3) $A and B only$ (4) $C and D only$ 206. $Assertion : Boron has a smaller first ionisation enthalpy than beryllium. Reason : The penetration of a 2 s -electron to the nucleus is more than the 2 p -electron hence, 2 p -electron is more shielded by the inner core of electrons than 2 s -electrons.$ (1) $Assertion and Reason both are correct statements but Reason is not correct explanation for Assertion.$ (2) $Assertion is correct statement but Reason is wrong statement.$ (3) $Assertion and Reason both are correct statements and Reason is correct explanation for Assertion$ (4) $Assertion and Reason both are wrong statements.$ 207. $Match List-I with List-II. List -I (A) Al^{3 +} < Mg^{2 +} < Na^{+} < F^{-} (B) B < C < O < N (C) B < Al < Mg < K (D) Si < P < S < Cl List - II (I) IonisationEnthalpy (II) Metalliccharacter (III) Electronegativity (IV) Ionicradii Choose the correct answer from the options given below:$ (1) $(A)-(IV), (B)-(I), (C)-(II), (D)-(III)$ (2) $(A)-(IV), (B)-(I), (C)- (III), (D)-(II)$ (3) $(A)-(III), (B)-(IV), (C)- (II), (D)-(I)$ (4) $(A)-(II), (B)-(III), (C)-(IV), (D)-(I)$ 208. $Identify the least stable ion amongst the following:$ (1) $L i^{-}$ (2) $B e^{-}$ (3) $B^{-}$ (4) $C^{-}$ 209. $In the long form of the periodic table, the valence shell electronic configuration of 5 s^{2} 5 p^{4} corresponds to the element present in:$ (1) $Group 17 and period 6$ (2) $Group 17 and period 5$ (3) $Group 16 and period 6$ (4) $Group 16 and period 5$ 210. $The correct order of electron gain enthalpies of Cl, F, Te and Po is$ (1) $F < Cl< Te < Po$ (2) $Po < Te < F < Cl$ (3) $Te <Po < Cl< F$ (4) $Cl<F <Te <Po$