Answer:
what are the choices?
Explanation:
2400
SI=PRT
p=10000
r=0.12
t=2
si=10000×0.12×2
=2400
6.273×10²³
hope this is useful friend
25th electron
the last electron is the valence electron. Assuming it has equal numbers of protons and electrons, then the 25th electron is the valence.
everything can be found in the picture
