Answer:
Explanation:
Surface tension allows the coin to float on top of the water in this glass. The strong cohesion between the molecules makes it harder for objects on the surface of the water to sink.
Normally, the number of electrons is equal to the number of protons, which makes atoms electrically neutral. The number of protons in an atom is the defining feature of an atom. It's what makes one element different from another. The number of protons in an atom is called its atomic number.
We Know, Atomic number of Gold (Au) = 79
1) Number of Protons = Atomic number = 79
Number of Electrons = Number of Protons = 79
Number of Neutrons = mass number - Atomic number = 195-79 = 116
2) Atomic number = 79 [ written on top of the element ]
Mass number = 195 [ written on bottom of the element ]
Hope this helps!