Answer:
In general, the number of valence electrons is the same within a column and increases from left to right within a row. Group 1 elements have just one valence electron and group 18 elements have eight, except for helium, which has only two electrons total.
I think its the mass that changes but im not sure
Answer:
it's a measure of how far down light can penetrate through the water column. ... Because water clarity is closely related to light penetration, it has important implications for the diversity and productivity of aquatic life that a system can support
Answer: i don't know
Explanation:
u gave no information on what you're asking
Answer:
its 303 Kelvin. (typing this for characters)
