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How Does the Size of Atoms (Atomic Size) Generally Vary in Going from Left to Right in a Period of the Periodic Table? Why Does It Vary this Way? - CBSE Class 10 - Science

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Question

How does the size of atoms (atomic size) generally vary in going from left to right in a period of the periodic table? Why does it vary this way?

Solution

The size of the atoms decreases on moving from left to right in a periodic table. This happens because the number of electrons and protons also increases and the nucleus of the atom becomes more positively charged. The nucleus exerts greater force of attraction on the electrons and pulls them tightly. As the nucleus pulls the outermost electrons towards it, the size of the atom (or the atomic radius) decreases.

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APPEARS IN

 Lakhmir Singh Solution for Chemistry for Class 10 (2019 Exam) (2018 to Current)
Chapter 5: Periodic Classification Of Elements
Q: 24.1 | Page no. 303
Solution How Does the Size of Atoms (Atomic Size) Generally Vary in Going from Left to Right in a Period of the Periodic Table? Why Does It Vary this Way? Concept: Position of Elements and Trends in the Modern Periodic Table.
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