[kr]5s^24d^105p^4 what is the chemical symbol for the atom? how many electrons does the atom have? how many 5s electrons are in the atom?

- Telleurium ( Te) is the chemical symbol
- electron is 52,
- there are 2 electron in 5s

☆ionisation energy increases across a period from na -> ar☆ionisation energy decreases down a group from li -> fr☆ionic radius decreases across a period from na -> cl☆ionic radius increases down a groupfrom f -> ii hope it clarifies your doubts