Question

current event or recent research related to atoms,atomic structure or chemical bonds.

Answer 1

Atom - An atom is the smallest constitute unit of matter that has property of a chemical element. every solid, liquid, gas and plasma is composed of neutral or ionised atom. atoms are very small typical size is 100 pm.

for example H₂ gas is composed of two H atom, water is composed of two H atom and one O atom.etc.

Atomic structure - Atom is made up of three partical proton, neutron and electron. protons and neutrons are reside in center of atom called nucleus. electron exist in cloud orbiting the nucleus. proton and neutron have approximately same mass and electron have extromly light weight one proton weight is 1800 time more than electron. electron cloud have radius 10000 time more than nucleus. neutral atom of particular element have same no. of proton and elctron. adding the proton made new atom while adding neutron made isotope of same element.

Chemical bond - bond formed by electrostatic force of attraction between atom with opposite charge or shairing of electron. when bond formed by attraction between opposite charge electron loss and gain take place and bond called ionic bond eg . in NaCl there is ionic bond Na give one electron to Cl and Cl accept electron from Na to form ionic bond. and when bond formed by shairing of electron called covalent bond. in covalent bond both atom shaire electron to form bond called covalent bond. eg. in Cl₂ covalent bond formed by shairing of electron between two atom of Cl.