the atomic number of a element is 20 in which period of the modern per

1.	the atomic number of a element is 20 in which period of the modern periodic table could this element be placed why? how will you decide whether the element is a metal or non metal?
Answer» Answer: the electronic configuration of 20 will be (2,8,8,2) its valency is 2 and thus it BELONGS to group 2 and the no. of SHELLS present are 4 N therefore it belongs to period 4. As the elements placed towards the right-side or present in the s-block are metals. therefore this element is a metal.

the atomic number of a element is 20 in which period of the modern periodic table could this element be placed why? how will you decide whether the element is a metal or non metal?

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Answer:

the electronic configuration of 20 will be (2,8,8,2) its valency is 2 and thus it BELONGS to group 2 and the no. of SHELLS present are 4 N therefore it belongs to period 4. As the elements placed towards the right-side or present in the s-block are metals. therefore this element is a metal.

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the atomic number of a element is 20 in which period of the modern periodic table could this element be placed why? how will you decide whether the element is a metal or non metal?​

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the atomic number of a element is 20 in which period of the modern periodic table could this element be placed why? how will you decide whether the element is a metal or non metal?