Structure of Atoms PDF
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Uploaded by LushAlien6106
New World International School
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Summary
This document provides information about the structure of an atom. It details objectives for studying the structure and electronic configuration of the first 20 elements in the periodic table, discusses total charge and ions, and explains electron shells and the relationship between mass number, protons, neutrons, and atomic numbers. The document also shows the electron configurations for sodium and carbon, likely intended for educational purposes.
Full Transcript
Objectives: To study about the structure of atom and electronic structure of first 20 elements from periodic table. Total charge on atom is zero or neutral. Number of electrons= Number of protons e (-)=p(+) IONS= either negative charge or positive charge(during a chemical reaction) +...
Objectives: To study about the structure of atom and electronic structure of first 20 elements from periodic table. Total charge on atom is zero or neutral. Number of electrons= Number of protons e (-)=p(+) IONS= either negative charge or positive charge(during a chemical reaction) + - NaCl →Na + Cl FIRST SHELL=2 electrons SECOND SHELL= 8 electrons THIRD SHELL = 8 electrons FOURTH SHELL = 18 electrons Mass number/nucleon number/Atomic mass= number of protons + number of neutrons Number of neutrons = mass number – number of protons Number of protons = number of electrons = atomic no. Sodium=11 2,8,1 Carbon=6 2,4
