The only stable caesium isotope is 133Cs, with 78 neutrons.
Hope this answers your Q
Answer:
yes
Explanation:
sodium is salt and you can get it in the store or anywere.
None of these; the most electronegative element is fluorine because an atom of fluorine needs an additional electron to join it's outer membrane, so the atom can achieve stability.
a flourine atom on its own is always a negative ion.
