Respuesta :

adioabiola

The charge on GA, SR, As, Br, Se are 3+, 2+, 3+, -, 2- respectively.

  • Ga and Sr are metals

  • Br and Se are non metals

  • As is an amphoteric element

Sr has full electron shell and 2 electrons in the outermost shell making it

[tex] {sr}^{2 + } [/tex]

  • Ga has full electron shell and 3 electrons in the outermost shell making it

[tex] {ga}^{3 + } [/tex]

  • Br has 7 electrons in the outermost shell, so it needs one more electron to complete it's orbit making it

[tex] {br}^{ - } [/tex]

  • [tex] {br}^{ - } [/tex]Se has 6 electrons in the outermost shell, it needs two more electrons making it

[tex] {se}^{2 - } [/tex]

  • As can give 3 out of its 5 electrons as metals forming

[tex] {as}^{3 + } [/tex]

Therefore, the charge on GA, SR, As, Br, Se are 3+, 2+, 3+, -, 2- respectively.

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