By definition, the atomic mass of an element is approximately the sum of the mass of protons and neutrons.
Of the choices given, C makes the most sense.
Answer: C) the number of protons and neutrons in an atom.
Answer:
the easiest and most cost effective ways to combat climate change, clean the air we breathe, improve the competitiveness of our businesses and reduce energy costs for consumers.
Explanation:
Yes, it is true to a certain that the number of outer shell electrons determines the chemical properties of an element, only because this determines how the element interacts with other elements.
Combustion Engine Exhaust----Cars, trucks, jet airplanes and other combustion engine vehicles cause air pollution. The exhaust from these contains carbon monoxide, nitrous oxide and gaseous oxide. This type of air pollution creates smog
