An element X has electronic configuration 2,8,2
a) what is the group of this element
b) to which peroid does it belong
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to which period does Lt belong
Explanation:
for each
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Answer:
period - 3 rd
group - 2nd
to find a period we need to know the no. of shells ; here we have 2,8 and 2 i.e 3rd period
to find the group we need to see the valance electron of the element if it is 1 and 2 then directly write it down as 1st or 2nd group and if the valence electron is between 3 to 8 you must add up 10 with the electron such as 3 +10 = 13 ; 4 +10 =14 so on...
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