Compendium of Projects Exhibited during the 2nd NLEPC - Vol I

ELECTRONIC CONFIGURATION
Introduction: As we know, protons have a positive charge
and electrons have a negative charge. Free (unattached)
uncharged atoms have the same number of electrons as
protons to be electrically neutral. There is a ranking or
hierarchy of the shells, usually with the shells further
from the nucleus having a higher energy. As we consider
the electron configuration of atoms, we will be describing
the ground state position of the electrons. When electrons
have higher energy, they may move up away from the
nucleus into higher energy shells. As we consider the
electron configuration, we will be describing the ground
state positions of the electrons.
What have I done in my project? :
1.A hydrogen atom has only one proton and one electron.
The electron of a hydrogen atom travels around the proton
nucleus in a shell of a spherical shape.
2.The two electrons of helium, element number two.
Being an inert element, it indicates that shell is full. It has
2 electrons in its only outermost shell.
3.Carbon has 2 electrons in first orbit and second orbit has
4 electrons .
4.Neon has a full shell of eight electrons in the outside
shell, the L shell, meaning the neon is an inert element,
the end of the period.
5.Argon, element eighteen, has two electrons in the K
shell, eight in the L shell, and eight in the M shell. The
fourth period begins again with potassium and calcium,
but there is a difference here. After the addition of the 4s
electrons and before the addition of the 4p electrons, the
sequence goes back to the third energy level to insert
electrons in a shell.
362
2012
nd
2 National Level
Exhibition
& Project
Competitions
Details of the participant
Name
Prajwal P Phadke
Class
IXth
Innovation in Science Pursuit for Inspired Research
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School Name & Address
Sri Jayanthi High School, Banavasi
Sirsi Education District
Name of the Mentor Teacher
Puttaswamy B S
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Name of the District & State
Sirsi Education District, Karnataka