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  Isotopes The atoms of same element having same numbers of protons in nucleus but different numbers of neutrons are called isotopes.  Hydrogen has three isotopes such as H-1, H-2, H-3. In all of these isotopes number of proton and electron are same as one while number of neutron differ, protium has no neutron, deutrium has one and tritium has two neutron as shown below. Carbon has three isotopes in which number of proton and electron sare same as six each, while the number of neutron are different as 6, 7, 8. Number of isotopes vary for an element some element has one and some have more than one which may be two, three, four, five, six etc. Isotones The atomic species having same numbers of neutron but different numbers of protons are called isotones. Carbon C-14 and nitrogen N-15 are called isotones as they have same number of neutron in their nucleus Isobars The atomic species having different atomic number but same mass number are called isobars Potassium K-40 and calcium ...

Atoms is basic unit of matter which consist on three main component such as electron, proton and neutron. These component further comprised of quarks. Proton : Atomic particles which are positively charged and present in the nucleus such as hydrogen has one proton in its nucleus and carbon has six proton. Numbers of proton in all atoms of an element always remain same. Neutron : These are uncharged atomic particles and they are presents in nucleus such as hydrogen has no neutron and carbon has six neutron. Number of neutrons vary in atoms of same element which are called isotopes. Electron : These are negatively charged atomic particles and present outside the nucleus such as hydrogen had on electron and carbon has six electron. The numbers of electron remain same in all neutral atom of same element. The proton and neutron is collectively called nucleus. The numbers of proton and neutron is always same in a neutral atom which the numbers of neutron can be different. There are now 118 t...

                Organic chemistry and inorganic chemistry are two main branches of chemistry. Organic chemistry deals with organic compounds containing carbon and hydrogen atoms. These compounds form covalent bond The rate of reaction is slow of these compounds They are poor conductor of electricity Insoluble in water Founds in living things These compounds cannot make salts Simple structure Inorganic chemistry deals with compound in composition other than carbon atoms. These compounds form ionic bonds Rate of reaction is high Good conductors of heat and electricity Soluble in water Found in non-living things These compounds make salts Complex structure