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Brief notes of atomic structure
08/06/2023
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Atoms NEVTRONS Contained in the nucleus are the PROTONS and are the ELECTRON SHELUS. Moving around the nucleus PARTICLE Proton Neutron Electron - ions. ! Overall atoms have no charge. As they have the same amount PROTONS & ELECTRONS. of P ( N nitrogen ! Isotopes RELATIVE MASS которе H H N 1 very Small - doesn't have equal number of PROTONS & ELECTRONS. is a charged particle. Elements 44 = CHARGE +1 - Elements are made of ATOMS with the SAME ATOMIC No. Atoms can be represented as symbols. F flonorine Scanned by CamScanner PROTONS F Zn zinc * Proton = positive = +1 neutron neutral = 0* equal An Atom... 1 J Ca calcium. An element with the same no. of PROTONS but a different No. of neuTRONS. • They have the same atomic no. different mass no.. ELECTRONS O = neutrons = Protons NEUTRONS 1-1-0 = electrons 2-1-1 etc... but Equations To calculate the RAM (relative atomic mass), this equation: RAM (Ar) ▬▬ = SCIENTIST History of the Atom John Dalton JJ Thomson Ernest Rutherford - Niels Bohr ✓ Puke James Chadwick no. (isotope abundance 1 x isotope abundance 1) + (isotope abundance 2 isotope abou TIME 19th century divide all by 100 * (A.K.A.: Sum of abundances of all isotopes) 1897 1909 around 1911 around 1940 Scanned by CamScanner X ; use mass PISCOVERY mass no_ 2) Atoms were first described as SOLID SPHERES!! Plum Pudding Model * * is a ball of charge with electrons scattered. atom ALPHA SCATTERING EXPERIMENT 7 mass concentratea at the centre, nudeus is charged. > most mass is in the nuclens. > most atom are empty space. Electrons are in shells ORBITING the NUCLEUS. Discovered neutrons in the hucleus. Isotopic notation] (number of protons) atomic no. mass no. (protons + neutrons) * ! number of protons E.G.: key stuff to remember: Isotopes are composed of the SAME ELEMENT, they have the SAME ATOMIC No., they have the SAME AMOUNT OF...
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Alternative transcript:
PROTONS. Isotopes differ from each other as they have a DIFF. MASS NO. I hence, DIFF. AMOUNT OF NEUTRONS. Relative Formular Mass = A = x protons electrons = Mass of H = Mass of 0 = Mass of H₂O Scanned by CamScanner charge of ion. atomic no. = number of protons mass no. protons + neutrons. Charge > (protons - electrons) symbol. number of electrons The relative formular mass (Mr) of a compound is the mass of all the elements in the compound added together. Нго 1 x2 16 (1x2)+16 = 18 -important- A. F.