Question

a metal in period 3 having valency 3 ? Plz help fast​

Answer 1

Answer:

Explanation:

aluminium in 3rd period have valency 3

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Answer 2

Answer:

  Group →13

Explanation:

       Valency →3

       Period →3,K,L,M

       Electronic configuration →2,8,3

    ∴ Atomic number →13,

    ∴ Element = Aluminium.