Answer: The electron arrangement for gallium is:
Ar 3d10 4s2 4p1
B) land cools off much faster than water (creating a air region of high density above land and lower density above sea)
A, because the shape of it forms and arc much like a H2O molecule.
Answer:
k+
Ba2+
Al3+
K+
S2-
you may think that if it has a + it would be bigger, but it is actually the opposite.
Your answer is going to be 200g
