Actions form positive ions while anions forms negative
[Ar] 3d10 4s2 4p5 is the electron configuration of bromine
An open system is
when there is a transfer of energy and matter with its surroundings.
A closed system is
where there is a transfer of energy, may it be heat or work, but not matter
with its surroundings.
An isolated system
is where there is no transfer of energy or matter with its surroundings.
No, isotopes would have a different number of electrons
Answer:
to identify the element by using flame tests
