Answer:
two electrons is the answer.
Explanation:
what are the unit given for the questions
Answer:
Proton:20
Electrons:20 (18 if wanted balance electron)
Mass:40
Ca²+
Answer:
i think option d
Explanation:
isoelectronic spcies don't have same no. of protons so the nuclear force is not equal
Sunspots Are decreased temperature areas. So it might be bright all around the sun spots, and the dark spots are where the temperature is lower. They usually form in polar pairs, meaning that on the other side in the same spot there would be another sunspot