should explain.
how did it get the +2oxidation state.
how did you find which metal belong to 17th group.
how did you find the period.....
plz sent me your answers .
I will mark you the BRAINLIST...
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Answer:a) B
b) C
c) 3rd period. Because it has 3 shells with principal quantum number 1 ,2 ,3.
d) D it has one outer electron and is thus a metal and can form cation by losing single valence electron.It reacts with oxygen to form metallic oxide which have basic character.
Explanation:
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