Question

the group and period which have same number of electrons​

Answer 1

Answer:

All elements in a row have the same number of electron shells. Each next element in a period has one more proton and is less metallic than its predecessor. Arranged this way, groups of elements in the same column have similar chemical and physical properties, reflecting the periodic law.

Answer 2

Answer:

elements in the same group have similar chemical properties because they have the same number of electrons in their outer shell. The atoms of all group 1 elements have similar chemical properties and reactions because they all have one electron in their outer shell.

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