2022-2023年度Botball國際教育機器人大會啟動，活動關(guān)鍵時間及挑戰(zhàn)內(nèi)容簡介
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Edexcel A Level Chemistry:復(fù)習(xí)筆記1.2.4 Electronic Configurations
Electronic Configurations of Atoms & Ions The?principal quantum shells?increase in energy with increasing?principal quantum number E.g.?n?= 4 is higher in energy than?n?= 2 The?su...
Edexcel A Level Chemistry:復(fù)習(xí)筆記1.2.3 Orbitals
Orbital Shapes Orbitals Subshells contain one or more?atomic orbitals Orbitals exist at?specific?energy levels and electrons can only be found at these specific levels,?not?in between them E...
Edexcel A Level Chemistry:復(fù)習(xí)筆記1.2.2 Quantum Shells
Developing Electronic Configuration Electrons move rapidly around the nucleus in energy shells If their energy is increased, then they can jump to a higher energy level The process is revers...
Edexcel A Level Chemistry:復(fù)習(xí)筆記1.2.1 Ionisation Energy
Factors Affecting Ionisation Energy Ionisation energy The?ionisation?Energy?(IE) of an element is the amount of energy required to remove?one mole?of electrons from?one mole?of gaseous atoms...
Edexcel A Level Chemistry:復(fù)習(xí)筆記1.1.4 Mass Spectrometry
Interpreting Mass Spectra Isotopes are different atoms of the same element that contain the same number of protons and electrons but a different number of neutrons These are atoms of the sam...
Edexcel A Level Chemistry:復(fù)習(xí)筆記1.1.3 Relative Mass
Isotopic & Atomic Mass The relative mass of an atom uses the carbon-12 isotope as the international standard One atom of carbon-12 has an accepted mass of 1.992646538 x 10-26?kg It is not reali...
