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Standard XII
Chemistry
Question

From the statements given, identify the right choice that explains the reason for the change of a particular period property.

(a) The effective nuclear force of attraction on the electrons of valence shell decreases, with increases in the number of inner shells.
(b) The successive ionization potential values of and elements are in the order I1>I2>I3>I4......
(c) Due to a decrease in atomic size, the electron affinity of an element increases along a period.
(d) Electronegativity increases from top to bottom due to increase in atomic size.
(e) An element with low ionization potential has high electropositivity.
(f) Bonding in oxides become covalent to ionic from left to right in a period.

  1. b, d and f
  2. a, c and e
  3. a, b and e
  4. b, c and f

A
a, c and e
B
a, b and e
C
b, d and f
D
b, c and f
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Similar Questions
Q1
From the statements given, identify the right choice that explains the reason for the change of a particular period property.

(a) The effective nuclear force of attraction on the electrons of valence shell decreases, with increases in the number of inner shells.
(b) The successive ionization potential values of and elements are in the order I1>I2>I3>I4......
(c) Due to a decrease in atomic size, the electron affinity of an element increases along a period.
(d) Electronegativity increases from top to bottom due to increase in atomic size.
(e) An element with low ionization potential has high electropositivity.
(f) Bonding in oxides become covalent to ionic from left to right in a period.

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Q2
Identify the correct statements from the following.
(a) An element with low ionization potential has high electropositivity and hence give out electrons easily.
(b) Due to decrease in ionization energy, in a group, the oxidizing property decreases.
(c) Electronegativity decreases along a period due to increase in nuclear charge and increase in atomic size.
(d) Due to increase in electron affinity the reducing property increases along a period.
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Q3
The electron affinity increases on moving from left to right along a period. Arrange the reasons in a proper sequence.
(a) The amount of energy released during the addition of an electrons increases from left to right along a period.
(b) Effective nuclear charge of the elements increases from left to right.
(c) The atomic size of the elements decreases from left to right.
(d) The tendency to gain electrons and form anion increases from left to right.
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Q4
Consider the following statements with reference to the periodic table of chemical elements
(a) Ionization potential gradually decreases along a period.
(b) In a group of elements, electron affinity decreases as the atomic weight increases.
(c) In a given period, electro-negativity decreases as the atomic number increases.
Which of these statements(s) is/are correct?
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Q5
Metals have few electrons in their valence shell while non-metals generally have more electrons in their valence shell. Metallic character is closely related to the atomic radius and ionization enthalpy. Metallic character increases from top to bottom in a group and decreases from left to right in a period of the periodic table. Metallic character is inversely related to the electronegativity of the element. :
The electronegativity of the following elements increase in the order :
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