an element has its electronic configuration as 2,8,2.now answer the following questions. a.what is the atomic number of the element? b.what is the group of the element? c.to which period does this element belong?
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Answer:
a.12
b.2
c.3
Explanation:
a.since the number of electrons is 12(2+8+2) the atomic number is also 12
atomic no is the number of protons or electrons in a nuetral atom
b. As it has 2 valence electrons it belongs to the group 2
c.it belongs to group 3 becoz the its electronic configuration is [Ne]3s^2
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