The incorrect statement is:

(a) The second ionisation energy of Se is greater than that of second ionisation energy of As 

(b) The first ionisation energy of C2+ ion is greater than that of first ionisation energy of N2+ ion

(c) The third ionisation energy of F is greater than that of third ionisation energy of O

(d) Helogens have highest I.E. in respective period

Concept Questions :-

Ionization Energy (IE)
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Consider the following ionisation reactions :

I.E. (kJ mol-1)

AgAg++e- ,       A1B(g)+B(g)2++e-,       B2C(g)+C(g)2++e-,      C2B(g)B(g)++e-,       B1C(g)C(g)++e-,      C1C(g)2+C(g)3++e-,      C3

If monovalent positive ion of A, divalent positive ion of B and trivalent positive ion of C have zero electron. Then incorrect order of corresponding I.E. is :

(a)C3>C2>B2                       (b)B1>A1>C1

(c)C3>C2>B2                       (d)B2>C3>A1

Concept Questions :-

Ionization Energy (IE)
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Which of the following is the incorrect match for atom of element?

(a) Ar3d54s1                        4th period, 6th group

(b)  Kr4d10                            5th period, 12th group

(c)  Rn6d27s2                       7th period, 3th group

(d)  Xe4f145d26s2               6th period, 4th group

 

Concept Questions :-

Electronic Configuration
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Which of the following order is correct for the property mentioned in brackets?

(a) S2->Cl->K+>Ca2+                 (Ionisation energy)

(b) C<N<F<O                              (2nd Ionisation energy)

(c) B>Al>Ga>In>Tl                     (Electronegativity)

(d)Na+>Li+>Mg2+>Be2+>Al3+    (Ionic radius)

Concept Questions :-

Ionization Energy (IE)
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IP1 and IP2 Mg are 178 and 348  Kcal mol-1 . The energy required for the reaction, 

                                       MgMg2+ + 2e- is :

(a) +170 Kacl 

(b) +526Kacl

(c) -170Kacl 

(d) -526Kacl

Concept Questions :-

Ionization Energy (IE)
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Which of the following characteristics regarding halogens is not correct?

(a) Ionization energy decreases with increases in atomic number 

(b) Electronegativity decreases with increases in atomic number 

(c) Electron affinity decreases with increases in atomic number 

(d) Enthalpy of fusion increases with increases in atomic number 

 

Concept Questions :-

Electron Affinity (EA)
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The process requiring the absorption of energy is :

(a) FF-

(b) HH-

(c) ClCl-

(d) OO2-

Concept Questions :-

Electron Affinity (EA)
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Consider the following statements:

(I) Rutherford name was associated with the development of periodic table.

(II) A metal M having electronic configuration 1s2, 2s2, 2p2, 3s2, 3d10, 4s1 is d-block element.

(III) Diamond is not an element.

(IV) The electronic configuration of the most electronegative elements is 1s2, 2s2, 2p5, and select the correct one from the given codes.

(A) I, II, IV                                      (B) I, II, III, IV

(C) II, IV                                         (D) I, III, IV

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There are four elements 'p', 'q', 'r' and 's' having atomic number Z-1, Z, Z+1 and Z+2 respectively. If there element 'q' is an inert gas, select the correct answers from the following statements.

(i) 'p' has most negative electron gain enthalpy in the respective period.

(ii) 'r' is an alkali metal.

(iii) 's' exists in +2 oxidation state.

(A) (i) and (ii)                      (B) (ii) and (iii)

(C) (i) and (iii)                     (D) (i), (ii) and (iii)

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Which of the following orders is correct for the size?

(1) Mg2+<Na+<F-Al

(2) Al3+<Mg2+Li+<K+

(3) Fe4+<Fe3+<Fe2+<Fe

(4) Mg>Al>Si>P

(A) (1), (2) & (3)                          (B) (2), (3) & (4)

(C) (1), (3) & (5)                          (D) (1), (2), (3) & (4)

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