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PERIODIC TABLE, periodic, chemical, of, The, tabular display, amanged, table, is, elements, which, are, atomic, number., There, 118, confirmed elements, are, in penodic, table., these, elements, Among, nature, 9o, be, found, Can, in, and, Yest, made., are, man-, Almost, 75, Sements, percent, metal., in, periodic, table, are, elements, Only, ligiid, two, are, there, which, are, at, temperature, Bromine ( Br), they, room, And, are, Mercuy (Hy), and, The, letter, 'J', only, periodie, is, alphabet, one, which, 15, not, used, in, table., unigue pasition, thus, has, in, moderm, periodic, Fying Drggan., it, is, elso, known, as, There, 7 periods, 18 group, are, and, in, periodic, table., There, blocks, are, 4, P- block,, in, periodic table, D- Block, ie., S- Block, f - block.

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Mnemonics to remember, Periddie, Table :, X-, ( Representation of, an element in, A, where, X Element symbol, Atomic mass, Atomic number, 4, He, He→, Helium, Atomic number, Atomic, mass, (S - Block Elements), Group-1:, メ, as Alkali Metals., Sodium Potassium Rubicium Cesium Francium, These, gre, known, Fydrogen Lithium, Li, Na, k, R., Cs, Fr, Maemonit O Heling, lab, feriyaad, Rb, Mnemonic O, Helina, ki, Rubi, se, friendship, eoing, Li Na, Rb, Cs, Fr, Group: 2 Berylium Magnesium Calcium, Strontium Barium Radium, Ra, Be, Ca, Sr, Ba, Mnemonic:, Beta, Mange, Boop Ranji, Car, Scooter, T., Ragji, Be, my, Sr, Ba, Ca, Ra, ( These, also known as Alkaline Earth Metals, are

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%23, # Group 18 Noble gases, Inert gases, or, Argon, krypton, Xenon, Radon, Helium, Neon, He, Ne, Ar, kr, Xe, Rn, Mnemonic :, Heena, Arti, koreena se Xe Rox liya-, Ne, and, He, Ne, kr, Xe Rn, • Our periodic., divided, into, 4, table, is, blocks., je., D & F, block., These, named, because, last electron, are, so, respective, orbitals / subshells., enters, into, Iso to pes.:-, but, different, Same, atomic namber, mass, number., 3., Isobar Elements, having, same, mass, number, but, different, atomic, number, 40, Ar, 18, g., & "Ca, 40, 20, Isotones Element, having, N no- of neuton= 15-78) R 0, Same, no. of neutrons., 15, 16, no.f neutron = (6-8, Isoclectronic: Elements or compound, having some, of, electrons., Nat a No.of electons, 9. (Mg+?, Al+3 Ne FO → All have, no., =0ENO- of electronst Ne, 10 eleetrons