Flashcards: Quantum Model and Periodic Classification — 11 cards

What does an atom consist of?

One atomic nucleus and surrounding electrons.

Atomic structure label

Atom has nucleus and electrons.

What charge does an electron have?

A charge of −1.6 × 10⁻¹⁹ coulombs.

Electron charge and mass

Charge −1.6×10⁻¹⁹ C; mass 9.1×10⁻³¹ kg.

When was the electron discovered with charge −e = −1.6 × 10⁻¹⁹ C?

In 1900.

Spectral emission type

Atoms emit discontinuous line spectra.

What forces act on an orbiting electron in the classical model?

Centrifugal force and electrostatic attraction to the nucleus.

Quantum number significance

Defines orbital shape, size, and orientation.

Periodic table grouping

Elements grouped by similar properties, increasing atomic number.

Electromagnetic wavelength formula

λ = c / ν, with c = 3×10⁸ m/s.

Schrödinger's contribution

Described particle probabilistically with wave equation.