7.4 Flashcards
What does the Bohr model do?
The Bohr model describes how electrons move in sets of orbits called “electron shells”
What are the arrangement of an atom’s electrons called?
Electronic configuration.
Why are electrons normally located as close to the nucleus as possible?
This is a lower energy state and more stable.
What is the valence shell?
The outermost shell of uncharged atoms
What does the no. of electrons in the valence shell determine?
The chemical properties of the element and how the atom will bond with other atoms
What is the emission spectrum?
The light seen through a spectroscope and the pattern of coloured lines.
How does the flame test work?
Small samples of substances give off coloured light when exposed to a flame.
What determines the light’s difference in colour?
The energy difference between each shell.
Each element has a unique colour due to its unique electron configuration.
What is the max configuration of electrons?
2, 8, 8, 32
