Civil Services UPPSC RO ARO 2024-25 Mock Tests Series General Science Chemistry Basic Concepts of Chemistry

Li, Na, Be और O की परमाणु त्रिज्या का सही क्रम क्या है?

1
Na > Li > Be > O
2
Na > Be > Li > O
3
Be > Li > Na > O
4
O > Be > Li > Na
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