They too have a mass of 1amu. The nucleus has an overall positive charge as it contains the protons. Every atom has no overall charge neutral. This is because they contain equal numbers of positive protons and negative electrons. These opposite charges cancel each other out making the atom neutral. Structure of the atom Everything in the world is made up of atoms. Apr 28, Explanation: Atoms are made up of positively charged particles called protons and negatively charged particles called electrons as well as non-charged particles called neutrons.
Related questions How do I determine the molecular shape of a molecule? What is the lewis structure for co2? What is the lewis structure for hcn? How is vsepr used to classify molecules? By adding one more electron we get a negatively charged Cl - ion with a net charge of The gain or loss of electrons by an atom to form negative or positive ions has an enormous impact on the chemical and physical properties of the atom.
Sodium metal, for example, which consists of neutral sodium atoms, bursts into flame when it comes in contact with water.
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