Chemistry - Classification Elements Periodicity Properties - Quiz-3

Transition elements show:

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variable valency
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paramagnetism
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catalytic properties
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all of these

The transition elements are more metallic than the representative elements because they have:

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The electrons in d-orbitals
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Electron pairs in d-orbitals
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Availability of d-orbitals for bonding
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Unpaired electrons in metallic orbitals

Which pair has elements containing a same number of electrons in the outermost orbit?

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N, O
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Na, Ca
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As, Bi
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Pb, Sb

The correct arrangement of increasing order of atomic radius among Na, K, Mg and Rb is

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Mg<K<Na<Rb
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Mg<Na<K<Rb
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Mg<Na<Rb<K
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Na<K<Rb<Mg

Which of the following statement is correct with respect to the property of elements with increase in atomic number in carbon family.

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Their metallic character decreases
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The stability of +2 oxidation state increases
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Their ionisation energy increases
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Their atomic size decreases

The correct order of second ionization potential of carbon, nitrogen, oxygen and fluorine is

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C > N > O > F
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O > N > F > C
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O > F > N > C
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F > O > N > C

The electronic configuration of the element which is just above the element with atomic 43 in the same group is ____________.

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1s²2s²2p⁶3s²3p⁶3d⁵4s²
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1s²2s²2p⁶3s²3p⁶3d⁵ 4s³ 4p⁶
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1s²2s²2p⁶3s²3p⁶3d⁶4s²
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1s²2s²2p⁶3s²3p⁶3d⁷4s²

Generally, the ionization enthalpy increases along a period but there are some exceptions. The one which is not an exception is-

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Be and B
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N and O
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Mg and Al
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Na and Mg

Sodium generally does not show an oxidation state of +2, because of:

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High first ionization potential.
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High second ionization potential.
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Large ionic radius.
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High electronegativity.

The electronegativity of the following elements increases in the order of -

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S < P < N < O
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P < S < N < O
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N < O < P < S
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N < P < S < O

The graph of the first ionization enthalpy versus atomic number as follows:

Which of the following statement is correct?

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Alkali metals are at the maxima and noble gases at the minima.
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Noble gases are at the maxima and alkali metals at the minima.
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Transition element are at the maxima.
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Minima and Maxima do not show any regular behaviour.

What is the combining ratio of a number of elements in group l with elements in group 17th of the periodic table ?

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1 : 2
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1 : 3
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2 : 1
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1 : 1

The First ionisation enthalpies of Na,Mg,Al and Si are in the order

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Na<Mg>Al<Si
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Na>Mg>Al>Si
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Na<Mg<Al<Si
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Na>Mg>Al<Si

The electronic configuration of chalcogens in their outermost shell is :

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${ns}^{2} {np}^{3}$
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${ns}^{2} {np}^{4}$
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${ns}^{2} {np}^{5}$
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${ns}^{2} {np}^{6}$

Among the following species, the smallest ion is :

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Na⁺
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F^-
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O^2-
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N^3-

The correct order for electron affinity of halogens is :

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Br > F
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F > Cl
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Br > Cl
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F > I

Which one of the elements has the highest ionization energy?

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[Ne]3s²3p¹
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[Ne]3s²3p²
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[Ne]3s²3p³
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[Ar]3d¹⁰4s²4p²

Element/Ion that has the highest electron affinity is :

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F^-
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O^-
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O
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Na

The correct order of second ionisation energies of B, C, N, & O is

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O > N > C > B
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O > C > N > B
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O > B > C > N
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O > N >B > C

Consider the following changes:

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$M (s) \to M (g) . . . . . (i) M (s) \to M^{2 +} (g) + 2 e^{-} . . . . . (i i) M (g) \to M^{+} (g) + e^{-} . . . . . (i i i i) M^{+} (g) \to M^{2 +} (g) + e^{-} . . . . . . (i v) M (g) \to M^{2 +} (g) + 2 e^{-} . . . . . . (v)$
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The second ionization energy of M could be calculated from the energy values associated with :
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(a) 1+3+4 (b) 2-1+3
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(c) 1+5 (d) 5-3

Incorrect statement among the following is -

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Van der Waals' radius of iodine is more than its covalent radius
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All isoelectronic ions belong to the same period of the periodic table
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$I . E_{1}$ of N is higher than that of O while $I . E_{2}$ of O is higher than that of N
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The electron affinity N is almost zero while that of P is 74.3 kJ $m o l^{- 1}$

An atom of the element A has 3 electrons in its outermost shell while another atom X has 6 electrons in its outermost shell. The formula of the compound between A and X could be.

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A₂X₃
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AX₃
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A₃X₂
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A₂X

Match list-I with list II and select the correct answer using codes given below:

1. List-I Ions List-II Radius (in pm)

(I) Li⁺ (a) 216

(II) Na⁺ (b) 195

(III) Br^- (c) 60

(IV) I^- (d) 95

Codes:

I II III IV

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a b d c
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b c a d
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c d b a
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d c b a

The screening effect of d-electrons is :

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Equal of the p-electrons
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Much more than p-electrons
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Same as f-electron
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Less than p-electrons

Values of electronegativity like 3.0, 2.8, 2.5 are related to :-

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Elements having low IP in the periodic table
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Elements having high EA in the periodic table
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Chalcogens
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None of the above

Allred Rochow's scale is related to:-

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Electronegativity, radius, and Z^*
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Resonance energy of the molecule, ionisation potential and electron affinity.
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Bond Polarity, diagonal relationship and periodicity.
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None of the above.

In scandium series, maximum distance between neutrons containing site and valence shell is of :-

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Sc
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Mn
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Fe
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Zn

Which of the following ionisation energy order is NOT correct :-

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Cu⁺ > Cu⁺²
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Mn⁺² > Mn⁺³
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$N^{+}$ < $N^{}$
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All of the above

Which of the following would not proceed in the forward direction spontaneously?

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${Si}^{+} + Cl \to Si + {Cl}^{+}$
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$F + I^{-} \to F^{-} + I$
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both
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none

Increasing order of ionic radii and decreasing order of number of protons of the given isoelectronic species is:-

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Ca⁺², K⁺, Cl^-, S^-2
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Cl^-, Ca⁺², K⁺, S^-2
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S^-2, Cl^-, Ca⁺², K⁺
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None of the above

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Practice Chemistry Quiz Questions and Answers

0:0:1

Practice Chemistry Quiz Questions and Answers

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