The Atomic Radii of Three Elements X, Y and Z of a Period of the Periodic Table Are 186 Pm; 104 Pm and 143 Pm Respectively. Giving a Reason, Arrange These Elements in the Increasing Order of Atomic Numbers in the Period. Answer 25: - Science

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The atomic radii of three elements X, Y and Z of a period of the periodic table are 186 pm; 104 pm and 143 pm respectively. Giving a reason, arrange these elements in the increasing order of atomic numbers in the period.

 

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Solution

The elements in the increasing order of atomic numbers in the period is X<Z<Y. On moving from left to right in a period, the atomic number increases. Hence, the size of the atomic radius decreases.

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Chapter 5: Periodic Classification Of Elements - Exercise 2 [Page 304]

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Lakhmir Singh Class 10 Chemistry (Science)
Chapter 5 Periodic Classification Of Elements
Exercise 2 | Q 25.3 | Page 304

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