The electrons in the highest occupied energy level of an atom are called valence electrons.
Answer:
MgSo4 is the right answer
B. An early form of chemistry that people used to try to turn metal.
Answer:
d. The sisters played against each other in tennis, but they did it without spite.
Explanation:
HNO3 and H2SO4 are Arrhenius acids which will increase the concentration of H+ when dissolved in water.
KOH and Ca(OH)2 are Arrhenius bases that increase the concentration of OH- when dissociated in water.
