1.what is also known as an element that has the same number of protons but different number of neutrons?

2.what difference will it make if two identical elements have different number of neutrons?​

Respuesta :

Answer:  1. isotope   2. Mass of elements are different

Explanation:  A stable Carbon atom has 6 protons but it may have 6 or 7 neutrons. Carbon with 6 neutrons is C-12 isotope and isotpe C-13 has 7 neutrons. Because of one neutron more in nucleus, C-13 atom weighs more.