MPSC Rajyaseva 2020 GS Paper 1 — Question 68
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आधुनिक आवर्तसारणीतील अणूची त्रिज्या हा आवर्ती गुणधर्म विचारात घेता खालीलपैकी कोणती विधाने बरोबर आहेत ? / In modern periodic table, which of the following statements about atomic radius are true ?
(a)वरून खाली जाताना वाढते. / Increases from top to bottom
(b)वरून खाली जाताना कमी होते. / Decreases from top to bottom
(c)डावीकडून उजवीकडे जाताना वाढते. / Increases from left to right
(d)डावीकडून उजवीकडे जाताना कमी होते. / Decreases from left to right
Atomic radius increases down a group due to the addition of new electronic shells, and decreases across a period from left to right due to increased effective nuclear charge.
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