The atomic no. of an element is 17. Predicti)- It's Valencyii)- It's Group No.iii)- the no. of valence electron in it's atom.iv)- nature of oxidev)- Formula of it's oxide.

The atomic no. of an element is 17. Predicti)- It's Valencyii)- It's G

1.	The atomic no. of an element is 17. Predicti)- It's Valencyii)- It's Group No.iii)- the no. of valence electron in it's atom.iv)- nature of oxidev)- Formula of it's oxide.
Answer» Atomic no 17 is CHLORINE 1--> VALENCY +1 to +7 2--> Group no. 17 (VIIA) 3--> 5 [Ne]3s2 3p5 as per electronic configration 4--> MAY be acidic 5--> Cl2O, ClO2, Cl2O6, Cl2O7