<Table> <Tr> <Th> Periodic table group </Th> <Th> Valence electrons </Th> </Tr> <Tr> <Td> Group 1 ( I ) ( alkali metals ) </Td> <Td> </Td> </Tr> <Tr> <Td> Group 2 ( II ) ( alkaline earth metals ) </Td> <Td> </Td> </Tr> <Tr> <Td> Groups 3 - 12 ( transition metals ) </Td> <Td> 3 -- 12 </Td> </Tr> <Tr> <Td> Group 13 ( III ) ( boron group ) </Td> <Td> </Td> </Tr> <Tr> <Td> Group 14 ( IV ) ( carbon group ) </Td> <Td> </Td> </Tr> <Tr> <Td> Group 15 ( V ) ( pnictogens or nitrogen group ) </Td> <Td> 5 </Td> </Tr> <Tr> <Td> Group 16 ( VI ) ( chalcogens or oxygen group ) </Td> <Td> 6 </Td> </Tr> <Tr> <Td> Group 17 ( VII ) ( halogens ) </Td> <Td> 7 </Td> </Tr> <Tr> <Td> Group 18 ( VIII or 0 ) ( noble gases ) </Td> <Td> 8 </Td> </Tr> </Table>
<Table> <Tr> <Th> Periodic table group </Th> <Th> Valence electrons </Th> </Tr> <Tr> <Td> Group 1 ( I ) ( alkali metals ) </Td> <Td> </Td> </Tr> <Tr> <Td> Group 2 ( II ) ( alkaline earth metals ) </Td> <Td> </Td> </Tr> <Tr> <Td> Groups 3 - 12 ( transition metals ) </Td> <Td> 3 -- 12 </Td> </Tr> <Tr> <Td> Group 13 ( III ) ( boron group ) </Td> <Td> </Td> </Tr> <Tr> <Td> Group 14 ( IV ) ( carbon group ) </Td> <Td> </Td> </Tr> <Tr> <Td> Group 15 ( V ) ( pnictogens or nitrogen group ) </Td> <Td> 5 </Td> </Tr> <Tr> <Td> Group 16 ( VI ) ( chalcogens or oxygen group ) </Td> <Td> 6 </Td> </Tr> <Tr> <Td> Group 17 ( VII ) ( halogens ) </Td> <Td> 7 </Td> </Tr> <Tr> <Td> Group 18 ( VIII or 0 ) ( noble gases ) </Td> <Td> 8 </Td> </Tr> </Table>
how many valence electrons do the elements in group 17 have
how many valence electrons do the elements in group 17 have
7
7