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Oliga [24]
3 years ago
10

Magnesium bromide is a binary ionic compound. From its formula, MgBr2, how do you know that

Chemistry
2 answers:
Scilla [17]3 years ago
8 0
You that Mg is the metal if in the periodic table it lands between group 1-12. So yeas Mg is a metal because it lands in group 2.

andrew-mc [135]3 years ago
8 0

Answer: Magnesium loses electrons to form Mg^{2+}

Explanation:

An ionic bond is formed when an element completely transfers its valence electron to another element. Metals donate the electron and forms a positively charged ion called as cation. Non metals accept the electrons and forms a negatively charged ion called as anion.

Electronic configuration of magnesium:

[Mg]:12: 1s^22s^22p^63s^2

Magnesium atom will loose one electron to gain noble gas configuration and form magnesium cation with +2 charge.

[Mg^{2+}]:10:1s^22s^22p^63s^0

Electronic configuration of bromine

[Br]:35:1s^22s^22p^63s^23p^64s^23d^{10}4p^5

Bromine atom will gain one electron to gain noble gas configuration and form bromide ion with -1 charge.

[Br^-]=1s^22s^22p^63s^23p^64s^23d^{10}4p^6

Thus as magnesium forms a cation , it is the metal.

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