Hurricane Irma's strong winds and outer rain bands hit the Florida Keys on Saturday as the Category 3 storm pushed toward the state amid dire warnings. Hurricane Irma's strong winds and outer rain bands hit the Florida Keys on Saturday as the Category 3 storm pushed toward the state amid dire warnings.
Isotopes: Different Types of Atoms. Atoms in a chemical element that have different numbers of neutrons than protons and electrons are called isotopes. The atoms in a particular element have an identical number of protons and electrons but can have varying numbers of neutrons.
An atom is always charge less i.e it is neutral. An atom always refers to a single element. The atomic number of an element refers to the number of protons or electrons in it. This is because an atom always has equal number of electrons and protons. Protons are positively charged while electrons are negatively charged. Atoms also contain neutrons which are neutral. Proton, neutron and electron are called sub atomic particles. Neutrons and protons are called nucleons since they are in the nucleus of the atom. Charged species are called ions.