Ionisation Energy | Trends, Factors affecting Ionisation Energy | IGCSE/ AS Level Chemistry

Ionisation Energy Explained | Trends, 4 Factors and Exam Questions | AS Level Chemistry Learn Ionisation Energy in A-Level Chemistry with this clear, step-by-step explanation of its definition, factors, periodic trends, and exceptions. In this video, we explore what ionisation energy means, why gaseous atoms are necessary, and why different elements require different amounts of energy to remove an electron. *Topics covered in this video:* What is ionisation energy? First and successive ionisation energies Why must atoms be in the gaseous state? Factors affecting ionisation energy Effect of nuclear charge on ionisation energy Effect of distance from the nucleus Electron shielding and subshell effects Ionisation energy trends across a period and down a group Exceptions to the general trends Successive ionisation energies and large energy jumps Who is this video for? Cambridge International AS Level and A Level Chemistry students, and teachers looking for a classroom resource on atomic structure and the periodic table. Watch until the end to strengthen your understanding and improve your ability to explain ionisation energy questions in exams. If you find this lesson helpful, please *LIKE, SHARE and SUBSCRIBE* for more Chemistry lessons and exam-focused explanations. #IonisationEnergy #ALevelChemistry #Chemistry #ASLevelChemistry #PeriodicTrends #AtomicStructure #chemistrynotes #periodictable