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Gelneren [198K]
3 years ago
6

Is magnesium a metal or a nonmetal? How many valence electrons does a magnesium atom have?

Chemistry
2 answers:
MatroZZZ [7]3 years ago
6 0
Magnesium is classified as a metal. Magnesium has two valence electrons
Romashka-Z-Leto [24]3 years ago
3 0

<u>Answer:</u> The given element is a metal and the number of valence electrons are 2

<u>Explanation:</u>

There are 2 types of elements in the periodic table:

  • Metals are the elements which have a tendency to loose electrons and thus they form cations. <u>For Example:</u> Sodium will loose 1 electron to form Na^+ ion.
  • Non-metals are the elements which have a tendency to gain electrons and thus they form anions. <u>For Example:</u> Chlorine will gain 1 electron to form Cl^- ion.

Valence electrons are defined as the electrons which are present in the outermost shell of an atom. Outermost shell has the highest value of 'n' that is principal quantum number.

<u>We are given:</u>

Magnesium is the 12th element of the periodic table having electronic configuration of 1s^22s^22p^63s^2

This element will loose 2 electrons to form Mg^{2+} ion

Number of valence electron in magnesium element = 2

Hence, the given element is a metal and the number of valence electrons are 2

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Answer:

80.8 g

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First, let's write a balanced equation of this reaction

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