It would be Calcium: Ca
We can tell which atom has 20 electrons by looking on the periodic table. If we look at number 20 (the atomic number shows how many electrons and protons an atom has) it is Calcium (symbol Ca).
Answer:
vh uvyvuf7g8vu8x yo curxtu
Explanation:
gu.
Answer:expert
There's no question??
\
For example, silicon has 14 protons and 14 neutrons. Its atomic number is 14 and its atomic mass is 28.
