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Atomic Structure notes

283 notes by 226 users · Page 4 of 8

This Atomic Structure page on GoConqr gathers notes on atoms, the periodic table and electronic configuration. With over 230 notes from more than 180 users, it offers mostly secondary-level material for school students revising atomic structure and teachers choosing revision resources. Pick a note to start exploring.

Atomic Structure Atomic Structure Dalton   Atoms are small indivisible particles Atoms of different elements vary in mass   The law of conservation of mass states that matter is neither created nor destroyed over t... Conor Curley
Isotopes Characteristics of Isotopes they are atoms of the same element with the same number of protons and electrons, but different numbers of neutrons(as shown below) isotopes have the same proton number but different nucleo... Clara Heng
Electrons Two theories of how electrons act:  Bohr Planetary: Electrons act like planets circling nucleus.  Quantum Mechanical: Electrons act like waves and like particles.  Energy is quantized, i.e, in... julie nalley
Valence Electrons Valence Electrons A chemical reaction involves either electron removal, electron addition, or electron sharing.  Valence electrons are the electrons in the highest occupied principal energy level of an atom. In t... Anabella Cristina Noguera Villamizar
Rules for Electronic Configuration Aufbau pirnciple: Rules for Electronic Configuration Electrons must fill orbitals starting with the lowest energy level available. The order is shown in the image to the right. ed.wilson89
Unit 2.1 Inside the Atom Introduction Every Substance in world are made up of atoms. An atom is smallest uncharged that take place in chemical reaction but atoms are still made out of smaller particles call subatomic particles.At the centre o... Visvamitra Ravindran
The Periodic Table In the periodic table, each group has its own charge, for example, group 1 has a charge of +1 and group 2 has a charge of +2. With these charges you can work out what the formula looks for each element. For example, m... lucynewby
The Electron: Subatomic Particles Subatomic particles = the particles that make up the atom Protons Neutrons Electrons Unified atomic mass unit: Used to express atomic and molecular masses Symbol = u 1 u = 1.66 x 10*-27 Equal to the mass of a proton o... alex.examtime9373
The Fundamental Ideas In Chemistry - created from Mind Map Atoms And Elements The Periodic Table Atomic Structure Matthew Johnson
Atomic Structure- Intro There are electrons, neutrons and protons in an atom. These are called the subatomic particles which every atom is made of. Electrons are the in the outer shell of the atom and protect the nucleus. Electrons have a re... arjunsh660536
Electronic Configuration New theories show that: Each principle quantum shell consists of energy sub-levels that are labelled s,p,d and f. The number of sub-levels in a shell depend on the principal quantum shell. An orbital is the volume of ... Reshiva Roopnarine
The Atom An atom is made up of three different parts: protons, neutrons and electrons.Protons are located in the nucleus, have a mass of 1 a.m.u (atomic mass unit) and have a positive charge (+1)Neutrons are located in the nuc... Shane Buckley
Untitled Electrons and atoms Bohr was the one that did the best modification. A quantum of energy is the amount of energy required to move an electron of level. This model detected that electrons move around circles. The ... José Rodolfo Méndez Aldana
Atomic Structure Isotopes are atoms with the same number of protons and electrons but different number of neutrons.Same atomic number = different mass number.Have same chemical properties due to same number of electrons.Have different... Melissa Lamb
Atoms and Electron Structure Atoms and Electron StructureAtomic StructureThe nucleus contains almost all of an atom because that is where the protons are found. The nucleus of an atom contains all of the positive charge and the electrons are nega... octaveofviolet
Atoms and Ions Atomic Mass - Number of Protons + NeutronsAtomic Number - Number of Protons (Also number of electrons)Atomic mass is always the largest number on a chemical element, Atomic number is smaller.DRAWING ELEMENTS-Inner ele... mate spark
Mass Spectrometer Mass Spectrum -(Eg. Magnesium)A sample of magnesium vapour is fed into a mass spectrometer and is bombarded by high energy electrons in the ionisation region. These electrons knock off electrons from the magnesium to ... Fern Bennington
Chemistry - Atoms Atoms All atoms are made up of protons, neutrons and electrons.Mass number - the number of protons + neutronsAtomic number - the number of protons in the nucleusIsotope - an element with the same number of protons but... Jake Locke
Atomic Structure and Isotopes revision note Atomic StructureAtomic Orbital = region of space where there is a high probability of finding an electronAn atomic orbital holds a maximum of 2 electrons1s 2s 2p 3s 3p 4s 3d 4p .....Isotopes Identical chemical propert... imogen.swaffer
chem notes Bohr-Rutherford Diagrams  used to represent atoms  Valence electrons are the electrons in the outermost energy level. Number of valence electrons  determines property The electrons are involved in bondi... jenna pandolfi
Ionisation Energy - created from Mind Map Ionisation Energy needed to form positive ions First Ionisation Energy Blank UwU
Atomic Structure Atomic structure Atoms are made up of three smaller particles called protons, neutrons and electrons. Table 3.1 shows the mass and electric charge of these particles. The mass is shown as relative mass, which is the m... Z S
Atomic Structure (1C) Protons and Neutrons are found in the Nucleus and the Electrons orbit around the Nucleus in shells, as shown here Isotopes are elements that differ in the number of Neutrons only! Relative Abundance karim14
Chapter 4 What does the nucleus of an atom contain? Protons and Neutrons Why does each element produce a different line spectrum?Each element produces a different line spectrumas different elements emits different wavelengths o... Alyssa Bibat
factors affecting Ionisation energies Factors affecting Ionisation EnergiesThere are 3 major factors :Atomic Radius -the greater the atomic radius the smaller the nuclear attraction experienced by the outer electronsNuclear ChargeThe greater the nuclear c... Matt Kallarackal
atoms ions and compounds All notes summarised from Kerboodle OCR A chemistry book year 1 The atom consists of a nucleus made up of two different types of subatomic particle protons and neutrons. The third type of subatomic part... Natalia Crisp[
AP Chemistry: Topic 2 - created from Mind Map atoms molecules ions Rainiera
The History of the Atom The word Atom comes from the term átomos, which means 'uncuttable' In 1805, the English philosopher John Dalton suggested that each element consists of unique atoms Ernest Rutherford named the proton in 1920... Average rating 4.0 out of 5 (2 ratings) · ed.wilson89
Radioisotopes Diana López
chap5&6 + QA Testing for gasesNH3 - ammoniacolour odour: colourless and pungent smelltest: put moist red litmus paper near the mouth of the test tube observation: red litmus paper turn blueCO2 - carbon dioxide colour odour: colour... felicia zxc
ISOTOPES cHEMISTRY rEVIEW AND ISOTOPES Matter- is composed of atoms, it is anything that has mass and occupies spaces Atoms are composed of small particles:Table 1: Basic Characteristics of the subatomic particles Subatomic Ch... Diana López
Atomic Particles Notes an atom is the smallest particle of an elementthe three smaller subatomic particles that make up an atom are electrons, protons, and neutrons.protons are located in the nucleus along with neutrons. electrons are locat... catmom
Untitled atomic structure elements in the periodic table are measured in order of increasing atomic number Electronic configurationelectrons are arranged in an orded fashion each shell can hold a maximum number of electrons Ru... ra14hd12
Electrons in Atoms Electrons in Atoms The scientific use mathematical models to describe the position of electrons in atoms because sometimes is easier to see the model. The limitation of Rutherford's atomic model is that it explained o... Anabella Cristina Noguera Villamizar
ATOMS - created from Mind Map AtomsSmallest particle Cannot be broken down further Scanning tunelling microscope gives us 3d look of electrons  AtomsSmallest particle Cannot be broken down further Scanning tunelling microscope shows 3d electr... Vansh Bhimani
Atomic structure the nuclear model of atoms includes the electrons orbiting in shells around the nucleus, consisting of protons and neutrons. particle      relative charge       relative massproton  ... hoverworm
Chemistry SL 1- November 12, 2014 2.3.1 Describe the electromagnetic spectrum.The electromagnetic spectrum  2.3.2 Distinguish between a continuous spectrum and a line spectrum. 2.3.3 Explain how the lines in the emission  spectrum of hydroge... hollandblumer6
Untitled Atoms and elements The periodic table ontains protons and electrons protons are positively charged neutrons have no charge nucleus has a positive charge overall because of protons tiny compared to the rest of the atom... aishafarah34
Electrons in Atom The atomic model presented in this textbook has considered atoms as consissting o protons and neutrons aking up a nucleus surrounded by electrons. Ruthefords model explained only a few simple properties of atoms. It c... Tati de la Roca
2.3 Electronic structure and the Periodic Table Electron Shells Electron move so rapidly that we cannot tell where they are at any point in time so we make a simple model to represent it. We imagine in spherical position having circular around the nucleus these orb... Visvamitra Ravindran

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