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Master the Basics of Atomic Structure with These Essential NCERT Class 11
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Master the Basics of Atomic Structure with These Essential NCERT Class 11 Chemistry Chapter 2 Notes! #NCERTChemistry #Class11Chemistry #AtomicStructure #Nucleus #Electrons #Isotopes #Valency #PeriodicTable #ChemistryNotes #ExamPreparation #CBSE #Education #Learning #Science #StudyTips #ImportantConcepts #ChemistryBasics #HighSchoolChemistry
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Atom is the smallest unit of matter which cannot be further divided without losing its chemical properties.
The nucleus of an atom is positively charged and is made up of protons and neutrons. Electrons revolve around the nucleus in different energy levels or shells.
The atomic number of an element is the number of protons present in its nucleus.
Isotopes are atoms of the same element with the same atomic number but different mass numbers due to the presence of different numbers of neutrons.
The mass number of an atom is the sum of the number of protons and neutrons present in its nucleus.
The electronic configuration of an atom refers to the arrangement of electrons in different energy levels or shells.
The maximum number of electrons that can be accommodated in a shell is given by the formula 2n^2, where n is the number of the shell.
The valency of an element refers to the number of electrons that an atom can lose, gain or share to form chemical bonds with other atoms.
The periodic table is a tabular arrangement of elements in order of their increasing atomic numbers.
The modern periodic table is based on the electronic configuration of elements and their properties. It is divided into periods (horizontal rows) and groups (vertical columns). Cbse Chemistry notes class 11 Class 11th chemistry
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