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Standard XII

Chemistry

Chemical Reactivity

The propertyi...

Question

The property(ies) which generally decreases on going down the group
(I) Electronegativity
(II) Ionisation enthalpy
(III) Atomic radius

(III) only

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(I), (II) & (III) only

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(I) & (II) only

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(I) & (III) only

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Solution

The correct option is C (I) & (II) only
Answer (2)
Atomic radius generally increases on going down the group.

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Similar questions

Q. Choose the correct answer:
With reference to the variation of properties in the Periodic Table, which of the following is generally true?
(a) Atomic size increases from left to right across a period.
(b) Ionisation potential increases from left to right across a period.
(c) Electron affinity increases going down a group.
(d) Electronegativity increases going down a group.

Explain the following
(i) Electronegativity of elements increase on moving from left to right in the periodic table.

(ii) Ionisation enthalpy decreases in a group from top to bottom.

Q. Discuss the general characteristics of Group

15

elements with reference to their electronic configuration, oxidation state, atomic size, ionisation enthalpy and electronegativity

Parts (a) to (e) refer to changes in the properties of elements on moving from left to right across a period of Periodic Table. For each property, choose the correct answer.

(a) The non-metallic character of the elements :

(i) decreases, (ii) increases,

(iii) remains the same, (iv) depends on the period

(b) The electronegativity :

(i) depends on the number of valence electrons,

(ii) remains the same,

(iii) decreases,

(iv) increases.

(i) goes up and down (ii) decreases

(iii) increases (iv) remains the same

(d) The atomic size :

(i) decreases,

(ii) increases,

(iii) remains the same ,

(iv) sometimes increases and sometimes decreases.

(e) The electron affinity of the elements in groups 1 to 7 :

(i) goes up and then down.

(ii) decreases and then increases,

(iii) increases,

(iv) decreases.

Q. How do the following properties vary on moving from left to right across a periodic table?
(i) Atomic radius (ii) Electronegativity
(iii) Ionisation potential

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The property(ies) which generally decreases on going down the group (I) Electronegativity (II) Ionisation enthalpy (III) Atomic radius

The correct option is C (I) & (II) onlyAnswer (2) Atomic radius generally increases on going down the group.

The property(ies) which generally decreases on going down the group
(I) Electronegativity
(II) Ionisation enthalpy
(III) Atomic radius

The correct option is C (I) & (II) only
Answer (2)
Atomic radius generally increases on going down the group.