Question

For the given statement, write the element that suits the best

Which element has

1. two shells, both of which are completely filled with electrons?
2. the electronic configuration is 2,8,2
3. a total of three shell with four electrons in its valency shell
4. a total of two shell with three electrons in the valency shell
5. twice as many electrons in its second shell as in its first shell

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Answer 1

Solution:

1. Neon is the element that has two shells, both of which are completely filled with electrons.
2. Magnesium is the element that has the electronic configuration of 2,8,2.
3. Silicon is the element that has a total of three shell with three electrons in the valency shell.
4. Boron is the element that a total of two shell with three electrons in the valency shell.
5. Carbon is the element that is twice as many electrons in its second shell as in its first shell.