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Rainbow [258]
3 years ago
13

I need help on this its due Monday

Chemistry
1 answer:
atroni [7]3 years ago
6 0

The properties of the elements can be determined from their electron configuration

<h3>Further explanation</h3>
  • Mg ⇒electron configuration :[Ne] 3s²

outer electron : 2 (3s²)

lose(2 electron)

charge : +2

cation (positive)

symbol : Mg²⁺

  • Br⇒electron configuration : [Ar] 4s²3d¹⁰4p⁵

outer electron : 7 (4s²4p⁵)

gain ( 1 electron)

charge : -1

anion (negative)

symbol : Br⁻

Helium⇒electron configuration : 1s²

outer electron : 2 (1s²)

stabil(no gain/no lose)

charge : 0

neutral

symbol : He

  • Nitrogen ⇒electron configuration : [He] 2s²2p³

outer electron : 5 ( 2s²2p³)

gain(3 electron)

charge : -3

anion

symbol : N³⁻

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