109. An element has atomic number 17 to which group and period closer it belong. [CBSE 2016]
Harshit Singh , 3 Years ago
Grade 12th pass
10 grade science> 109. An element has atomic number 17 to w...
1 AnswersPawan Prajapati
Last Activity: 3 Years ago
Answer: Explanation: Its electronic configuration is 2, 8, 7. It belongs to group 17 because it has 7 valence electrons. It belongs to 3rd period because it has 3 shalls.
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