Periodic Table & Periodicity PYQs Set 11 (PDF)

Set 11 of 11 · Questions 301-327 of 327

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Mere Teacher · Previous Year Questions JEE Main Chemistry · Periodic Table & Periodicity · Set 11 (Q301-327)
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301. $H^{+} ion always get associated with other atoms or molecules. This is because$ (1) $Ionisation enthalpy of hydrogen resembles that of alkali metals.$ (2) $Its reactivity is similar to halogens.$ (3) $It resembles both alkali metals and halogens.$ (4) $Loss of an electron from hydrogen atom results in a nucleus of very small size as compared to other atoms or ions$ 302. $Consider the following statements : I. The radius of an anion is larger than that of the parent atom. II. The ionization energy generally increases with increasing atomic number in a period. III. The electronegativity of an element is the tendency of an isolated atom no attract an electron. Which of the above statements is/are correct?$ (1) $I alone$ (2) $II alone$ (3) $I and II$ (4) $II and III$ 303. $Match the following. List I A. Rubidium B. Platinum C. Eka-silicon D. Polonium List II (1) Germanium (2) Radioactive chalcogen (3) s-block element (4) Atomic number 78 A B C D$ (1) $4 3 2 1$ (2) $3 4 1 2$ (3) $2 1 4 3$ (4) $4 3 1 2$ 304. $What is the atomic number of the element with symbol Uus?$ (1) $117$ (2) $116$ (3) $115$ (4) $114$ 305. $Similarity in chemical properties of the atoms of elements in a group of the periodic table is most closely related to:$ (1) $atomic numbers$ (2) $atomic masses$ (3) $number of principal energy levels$ (4) $number of valence electrons$ 306. $The correct order of atomic radii in group 13 elements is$ (1) $B < A l < I n < G a < T l$ (2) $B < A l < G a < I n < T l$ (3) $B < G a < A l < T l < I n$ (4) $B < G a < A l < I n < T l$ 307. $The electron gain enthalpy (in kJ/mol) of fluorine, chlorine, bromine and iodine, respectively are:$ (1) $- 296, - 325, - 333, - 349$ (2) $- 333, - 349, - 325, - 296$ (3) $- 349, - 333, - 325, - 296$ (4) $- 325, - 333, - 349, - 296$ 308. $Which one of the following amongs each pair will release maximum energy on gaining one electron (A = F = Cl), (B = S, Se), (C = Li, Na)$ (1) $(A) = Cl, (B = S, Se), (C = Li, Na)$ (2) $(A) = F, (B) = Se, (C) = Li$ (3) $(A) = F, (B) = Se, (C) = Na$ (4) $(A) = Cl, (B) = S, (C) = Na$ 309. $One of the characteristic properties of non‐ metals is that they$ (1) $are reducing agents$ (2) $form basic oxides$ (3) $form cations by electron gain$ (4) $are electronegative.$ 310. $Which of the following elements in considered as a metalloid?$ (1) $Sc$ (2) $Pb$ (3) $Bi$ (4) $Te$ 311. $The electronegativity of aluminium is similar to:$ (1) $Lithium$ (2) $Carbon$ (3) $Boron$ (4) $Beryllium$ 312. $Elements X, Y and Z have atomic numbers 19, 37 and 55 respectively. Which of the following statements is true about them?$ (1) $Z would have the highest ionization potential.$ (2) $Y would have the highest ionization potential.$ (3) $'Their ionization potential would increase with increasing atomic number.$ (4) $Y would have an ionization potential between those of X and Z .$ 313. $Which of the following material is not a semiconductor.$ (1) $Silicon$ (2) $Copper oxide$ (3) $Germanium$ (4) $Graphite$ 314. $The correct order of electron affinity is:$ (1) $F > Cl > O$ (2) $F > O > Cl$ (3) $Cl > F > O$ (4) $O > F > Cl$ 315. $Arrange the elements Se, Cl and S in the increasing order of ionisation energy :$ (1) $Se > S > Cl$ (2) $Se < S < Cl$ (3) $Se < S > Cl$ (4) $None of the above$ 316. $Following table shows the successive molar ionisation energy (Kl mol^{- 1}) of five elements A to E. Ionisation energy (kJ/mol^{- 1}) Element 1st 2nd 3rd 4th A 2080 4000 6100 9400 B 500 4600 6900 9500 C 740 1500 7700 10500 D 580 1800 2700 11600 E 420 3100 4400 5900 Which two elemetns are most likely to be in the same group of the periodic table?$ (1) $C and D$ (2) $D and E$ (3) $B and D$ (4) $B and E$ 317. $Which of the order for ionization energy is correct ?$ (1) $Be < B < C < N < O$ (2) $B < Be < C < O < N$ (3) $Be > B > C > N > O$ (4) $B < Be < N < C < O$ 318. $Which one of the following metallic oxides exhibit amphoteric nature?$ (1) $BaO$ (2) $Al_{2} O_{3}$ (3) $Na_{2} O$ (4) $CaO$ 319. $Anomalous behaviour of oxygen is due to its$ (1) $Large size and high electronegativity$ (2) $Small size and low electronegativity$ (3) $Small size and high electronegativity$ (4) $Large size and low electronegativity$ 320. $Which of the following does not represent the correct order of the properties indicated ?$ (1) $O^{2 -} > Ne > M g^{2 +} > A l^{3 +} (size)$ (2) $N^{3 -} < O^{2 -} < F^{-} < N a^{+} (Nuclear charge)$ (3) $Li > Be > B > C (Electron gain enthalpy)$ (4) $Li > Na > K > Cs (iE)1$ 321. $The IUPAC nomenclature of an element with electronic configuration [Rn] 5 f^{14} 6 d^{1} 7 s^{2} is :$ (1) $Unnilbium$ (2) $Unnilunium$ (3) $Unnilquadium$ (4) $Unniltrium$ 322. $Which of the following orders of ionic radii is correctly represented?$ (1) $H^{-} > H^{+} > H$ (2) $N a^{+} > F^{-} > O^{2 -}$ (3) $O^{2 -} > F^{-} > Na^{+}$ (4) $A 1^{3 +} > M g^{2 +} > N^{3 -}$ 323. $The statement(s) that are correct about the species O^{2 -}, F^{-}, Na^{+} and Mg2+. (A) All are isoelectronic(B) All have the same nuclear charge (C) O^{2 -} has the largest ionic radii(D) Mg2+ has the smallest ionic radii Choose the most appropriate answer from the options given below :$ (1) $(B), (C) and (D) only$ (2) $(C) and (D) only$ (3) $(A), (C) and (D) only$ (4) $(A), (B), (C) and (D)$ 324. $The first ionization enthalpies of Be, B, N and O follow the order$ (1) $0 < N < B < Be$ (2) $Be < B < N < O$ (3) $B < Be < N < O$ (4) $B < Be < 0 < N$ 325. $The orbital nearest to the nucleus is$ (1) $4 f$ (2) $5 d$ (3) $4 s$ (4) $7 p .$ 326. $Reason of lanthanoid contraction is :$ (1) $Poor screening effect of 4f orbitals$ (2) $Constant nuclear charge$ (3) $Decreasing nuclear charge$ (4) $Decreasing screening effect$ 327. $Given below are two statements : Statement I : The correct order of first ionization enthalpy values of Li, Na, F and Cl is Na < Li < Cl < F . Statement II : The correct order of negative electron gain enthalpy values of Li, Na, F and Cl is Na < Li < F < Cl In the light of the above statements, choose the correct answer from the options given below :$ (1) $Statement I is true but Statement II is false$ (2) $Statement I is false but Statement II is true$ (3) $Both Statement I and Statement II are false$ (4) $Both Statement I and Statement II are true$