Which one of the following depicts the correct representation of the atomic radius of an atom?

(i) and (ii)

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(ii) and (iii)

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(iii) and (iv)

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(i) and (iv)

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Solution

The correct option is C (ii) and (iii)
Atomic radius is generally stated as being the total distance from an atom's nucleus to the outermost orbital of electron.

In (ii) & (iii), the atomic radii are rightly shown as the distance between the nucleus and the boundary of the valence electrons(shell).

Hence the correct option is B.

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Which one of the following depicts the correct representation of atomic radius(r) of an atom?

(a) (i) and (ii)
(b) (ii) and (iii)
(c) (iii) and (iv)
(d) (i) and (iv)

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I I I

stands for

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I I I I

for

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and

I I

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solve the following :

I I - I I I I + I I I + I I I I I =

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Which of the following are the correct characteristics of isotopes of an element?

(i) same atomic mass (ii) same atomic number

(iii) same physical properties (iv) same chemical properties

(a) (i), (ii) and (iv) (b) (ii), (iii) and (iv) (c) (ii) and (iii) (d) (ii) and (iv)

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