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CBSE Class 10 Answered

Please answer the 17
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Asked by nk9764831 | 12 Feb, 2020, 10:23: PM
answered-by-expert Expert Answer
Q.30) 
Given:
 
Element belongs to period: 3
 
and group: 17
 
a) Therefore element is Chlorine (Cl)
 
b) Atomic no. of Cl is 17.
 
    Electronic configuration Cl(17): 2,8,7
 
c) Valency of element is 1.
 
d) Elements with similar properties as chlorine are Fluorine, bromine.
 
    Elements from the same group have similar chemical properties.
Answered by Varsha | 14 Feb, 2020, 10:27: AM

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