Answer:
Copper
Step-by-step explanation:
Count the exponents and this tells you the proton amount (atomic number)
and electron count
This is the electron configuration
Step-by-step explanation:
2/5,1/3,4/15
1,2,3,4,5,15
8in hope this could help you
Answer:
A
Step-by-step explanation:
Basically, this is an observational study because the researcher does not apply any treatment.
It's not an experiment because there is no experimentation involved. :)
It's not double-blind because in that case the researcher would have to apply something to two kinds of groups. one aware one the other not. not the case.
It's not D because The observations are comparing two kinds of subjects and they are not looking for a cause and effect.
