Mg+^2 has completely filled K & L shells. Explain what do you understand by this statement.
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The atomic number of Magnesium is 12 (2,8,2)due to which it is unstable. The statement above means that Mg has given 2 electrons and now has turned into an ion and has also become stable due to which it is having a valency of +2 and now the number of electrons in its K and L shell will be 2 and 8 respectively. Now it is stable.
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Mg+² is a positive ion of Mg.
Mg+² is with a positive valency of 2, this states that Mg had two e- in its outer / last shell and Mg+² have completed its octet. And, Mg+² has a positive valency, it means that it has given its 2 e- in order to attain a stable electronic configuration.
Since Mg+² has given 2 e- to attain a stable electronic configuration, Mg is a metal.
It is given that Mg+² has completely filled K & L shells. This statement indirectly states that Mg had not got a stable electronic configuration in M shell. Also, it had 2 e-. So, we can say that it had 2 e- in M shell. And, from the properties of periodic table, elements having 2 e- outermost shell with positive valency, are from group 2. Elements belongs to period 3, as it's outermost shell is M shell.
It means, Mg is metal from 2 group and 3 period of the periodic table. And, Mg+² is an anode of Mg.
Mg+² is with a positive valency of 2, this states that Mg had two e- in its outer / last shell and Mg+² have completed its octet. And, Mg+² has a positive valency, it means that it has given its 2 e- in order to attain a stable electronic configuration.
Since Mg+² has given 2 e- to attain a stable electronic configuration, Mg is a metal.
It is given that Mg+² has completely filled K & L shells. This statement indirectly states that Mg had not got a stable electronic configuration in M shell. Also, it had 2 e-. So, we can say that it had 2 e- in M shell. And, from the properties of periodic table, elements having 2 e- outermost shell with positive valency, are from group 2. Elements belongs to period 3, as it's outermost shell is M shell.
It means, Mg is metal from 2 group and 3 period of the periodic table. And, Mg+² is an anode of Mg.
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