MODERN PERIODIC LAW

POWERPOINT PRESENTATION ON MODERN PERIODIC TABLESUBMITTED BY SUBMITTED TO DEEPIKA RAJ C DIVYA TEACHER PHYSICAL SCIENCE ASST.PROF. IN PHYSICAL SCIENCE EXAM CODE :18213102 MITE, CHAVARCODE CANDIDATE CODE: 18214389007 METCA INSTITUTE OF TEACHER EDUCATION CHAVARCODE 2014-2016

WELCOMEMODERN PERIODIC LAWPROPERTIES OF THE ELEMENTS DEPENDS ON THEIR ATOMIC NUMBERSWHEN ELEMENTS ARE ARRANGED IN THE ASCENDING ORDER OF THEIR ATOMIC NUMBER THERE IS A REPETITION OF THEIR PROPERTIES AT FIXED INTERVALS3MODERN PERIODIC TABLE

MODERN PERIODIC TABLEIT WAS PUT FORWARD BY MOSLEYTHERE ARE 7 PERIODS AND 18 GROUPSELEMENTS IN A SAME GROUP HAVE EQUAL NUMBER OF ELECTRONSELEMENTS IN A GROUP SHOW SIMILIAR PROPERTIESNUMBER OF SHELLS OF N ELEMENT IS EQUAL TO THE PERIOD NUMBER

Periodic Table: The three broad ClassesMain, Transition, Rare Earth

VALENCYVALENCY IS THE COMBINING CAPACITY OF ELEMENTS.IT IS EQUAL TO THE NUMBER OF VALENCE ELECTRONSIT IS THE NUMBER OF ELECTRONS DONATED, ACCEPTED OR SHAREDELEMENT FAMILIESGROUP NUMBERNAME OF THE ELEMENT FAMILYNUMBER OF VALENCE ELECTRONSVALENCY1ALKALI METAL FAMILY112ALKALINE EARTH METAL FAMILY2213BORON FAMILY3314CARBON FAMILY4415NITROJEN FAMILY5516OXYGEN FAMILY6617HALOGEN FAMILY7718NOBLE GAS FAMILY88REPRESENTATIVE ELEMENTSSHOW PERIODIC REPETITION OF ELECTRONIC CONFIGURATIONTHERE ARE ELEMENTS BELONGING TO DIFFERENT CATEGORIES LIKE METALS, NON-METALS AND METALLOIDSTHERE IS REPRESENTATION FOR ELEMENTS IN VARIOUS PHYSICAL STATESSIMILIAR PROPERTIES ARE EXHIBITED WITHIN THE GROUP TRANSITION ELEMENTSTHE ELEMENTS IN GROUPS 3 TO 12ALL ARE METALSTHROUGH THE PERIODSPERIOD NUMBERNUMBER OF ELEMENTS IN EACH PERIODWHICH ARE THE SHELLS IN THE ATOMS IN EACH PERIODTOTAL NUMBER OF SHELLS12K128K, L238K, L, M3418K, L, M, N4518K, L, M, N, O5THROUGH PERIODSPERIOD NUMBER IS EQUAL TO TOTAL NUMBER OF SHELLS IN THE ATOMIN SEVENTH PERIOD THE ELEMENTS THAT COME AFTER LANTHANUM ARE CALLED LANTHANONESIN THE SEVENTH PERIOD ELEMENTS THAT COME AFTER ATINIUM ARE CALLED ACTINONESTHANK YOU