Question

An atom of magnesium has an 'atomic number' 12 and mass number 24.
1. state it's electronic configuration and valency
2.give a reason why it is considered a metal .
3. give a reason why chlorine is considered a non metal
4.state the number of nucleons in the nucleus of the atom of magnesium
5.give a reason why the L shell of magnesium has 8 electrons and not 10
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Answer 1

Answer:

Electronic configuration 2 ,8,2 its valency is +2 it is considerd as metal because it donate two electrons to complete its octet .Chlorine is non metal because it gains 1 elctrons from other to complete its octet.L shell of mg has 8 electrons not 10 because k shell as ability to hold only 8 electons . its had 13 Neutrons . hope it help you

Answer 2

Answer:

sorry brother I don't know