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Chemistry

Why Does the Hydrogen Emission Spectrum Have Discrete Lines?

Learn why hydrogen produces discrete emission lines through quantized electron energy levels, photon transitions, and ΔE = hc/λ in IB Chemistry.

S1.3 Electron configurations

How Many Electrons Can Each Energy Level Hold (2n²)?

Learn how the 2n² rule gives the maximum electrons in each main energy level, with IB Chemistry examples, shell capacities, common traps, and exam tips.

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Every question IB students actually ask.

Chemistry

Why Does the Hydrogen Emission Spectrum Have Discrete Lines?

How Many Electrons Can Each Energy Level Hold (2n²)?

MYP Subjects

Chemistry

Why Does the Hydrogen Emission Spectrum Have Discrete Lines?

How Many Electrons Can Each Energy Level Hold (2n²)?

What Are s, p, d, and f Orbitals/Sublevels?

How Do You Calculate Relative Atomic Mass From Isotope Abundance?

What Causes Emission Spectra, and Why Do Elements Produce Different-Colored Light?

What's the Difference Between a Continuous Spectrum and a Line Spectrum?

What Is an Isotope?

Why Do Isotopes of the Same Element Behave Differently Physically but Not Chemically?

How Does a Mass Spectrometer Work? (HL)

How Do You Find the Number of Protons, Neutrons, and Electrons from an Isotope Symbol?

What Are Protons, Neutrons, and Electrons Made Of, and Where Are They Located?

Why Is Temperature a Measure of Average Kinetic Energy?

How Do You Convert Celsius to Kelvin?

What Are the States of Matter and How Do They Change (Melting, Freezing, and Sublimation)?

What Is Kinetic Molecular Theory?

How Do You Separate a Mixture? (Filtration; Distillation; Chromatography; Recrystallization)

What's the Difference Between an Element, a Compound, and a Mixture?

What's the Difference Between a Homogeneous and Heterogeneous Mixture?

How Do You Calculate the pH of a Buffer Solution? (HL)