Determine whether each element is an isotope, ion, or is neutral

Atoms are made of three types of sub atomic particles, they are the electrons, neutrons and protons.  Electrons are negatively charged and they are orbiting around the nucleus in energy shells. Protons are positively charged , neutrons are neutral and have no charge, both neutrons and protons are located in the nucleus. In atoms the atomic number is the number of protons the atom consists of and mass number is the sum of protons and neutrons in the nucleus. In a neutral atom, the number of electrons and protons are equal, this means that the number of negative charges and positive charges are equal. lets take Cl as an example. Its atomic number is 17. number of protons and charge - +17 number of electrons with charge - -17 overall chage sum of the charges = + 17 -17 = 0 therefore no charge, hence its neutral. isotopes are the same element having the same atomic number but different mass numbers. ³⁵Cl -protons - 17 electrons - 17 neutrons 18 neutrons  

Explanation:

smooth muscle is composed of involuntary muscles found within the walls of organs and structures such as the esophagus, stomach, intestines, and blood vessels. those muscles push materials like food or blood through organs. unlike skeletal muscle, smooth muscle can never be under your control.