<Dd> <Table> <Tr> <Td> 14 6C </Td> <Td> → </Td> <Td> 14 7N </Td> <Td> + </Td> <Td> e − </Td> <Td> + </Td> <Td> ν </Td> </Tr> </Table> </Dd> <Table> <Tr> <Td> 14 6C </Td> <Td> → </Td> <Td> 14 7N </Td> <Td> + </Td> <Td> e − </Td> <Td> + </Td> <Td> ν </Td> </Tr> </Table> <Tr> <Td> 14 6C </Td> <Td> → </Td> <Td> 14 7N </Td> <Td> + </Td> <Td> e − </Td> <Td> + </Td> <Td> ν </Td> </Tr> <P> Another type of radioactive decay without change in mass number is emission of a gamma ray from a nuclear isomer or metastable excited state of an atomic nucleus . Since all the protons and neutrons remain in the nucleus unchanged in this process, the mass number is also unchanged . </P>

How many protons are there in any cl atom