Answer:
B : acid rain ?
Explanation:
how would humans- well i mean factories couldddddd produce it but uhhhh
Answer:
one mole of atom of any element contains6.022×1033 atoms regardless of the type of elements the mass of one mole of an element depend on what that element is and is equal to atom mass of that element in gram
They become more stable because they achieve a full outer shell of valence electrons with the magic number of 8.