An elenent has atomic no.13(a)what is the group abd oeriod number to which this ekemwnt belongs (b)is this elenent a netal ir non metal justify yiur abswed
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electronic configuration = 2,8,3
az we can see that there are 3 electrons in its outermost shell therefore the group number = 3+10=13
group number = number of electrons in outermost shell+10
we add 10 when the number of electrons in the outermost shell is greater than 2.
period number = number of shells in am atom.
as we can see there are total three shells therefore period number=3
(2) this element is a metal because it has 3 electrons in its outermost shell and needs 5 more to complete its octet bur to gain electrons it requires a lot of energy so it looses its 3 electrons and gain a positive charge.
hope it helps you.
please mark it as brainliest.
az we can see that there are 3 electrons in its outermost shell therefore the group number = 3+10=13
group number = number of electrons in outermost shell+10
we add 10 when the number of electrons in the outermost shell is greater than 2.
period number = number of shells in am atom.
as we can see there are total three shells therefore period number=3
(2) this element is a metal because it has 3 electrons in its outermost shell and needs 5 more to complete its octet bur to gain electrons it requires a lot of energy so it looses its 3 electrons and gain a positive charge.
hope it helps you.
please mark it as brainliest.
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Ans 1= the element is Aluminium.
group - 13
period- 3
Ans 2= Metal.
group - 13
period- 3
Ans 2= Metal.
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