<Tr> <Th> + 1 </Th> <Td> </Td> <Td> </Td> <Td> </Td> </Tr> <Tr> <Th> 0 </Th> <Td> </Td> <Td> </Td> <Td> </Td> </Tr> <Tr> <Th> − 1 </Th> <Td> </Td> <Td> </Td> <Td> </Td> </Tr> <Tr> <Th> − 2 </Th> <Td> </Td> <Td> </Td> <Td> </Td> </Tr>

Write any one difference between the electronic configuration of group 1 and group 2 elements