Question

an element has atomic number 17 where would you expect this element in the long form of periobic table

Answer 1

hey...
today's exam question...
its chlorine...
group: VIIB
period: 3

Answer 2

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HERE IS YOUR ANSWER..

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If an element has 17 as its atomic number, this element can be expected in 17th group of periodic table which is of halogens and it'll be in the 3rd period.

● This placement depends upon the electronic configuration.

● As, it would be 2, 8, 7 in this case.

● 7 in the outermost shell states that its group is 7 and by the " spdf " shell arrrangement its period would be 3rd.

■ This element is Chlorine ( Cl ).

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HOPE IT HELPED..

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