Respuesta :
2 - The number of protons in the atomic nucleus
A different number of protons in the nucleus changes the element, and each element in the periodic table has its own proton number.
A different number of protons in the nucleus changes the element, and each element in the periodic table has its own proton number.
Answer:
B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B
Explanation: