Worksheets2.05b Quiz: Crash Course Chemistry #5 - The Electron
Total questions: 12
Worksheet time: 3hrs 0mins
In the 1860s, Dmitri Mendeleev published this classification of elements and predicted patterns in their properties.
Periodic Table of the Elements
Mendeleev Atomic Models
John Newlands compared the periodicity of elements to:
Colors of the rainbow
A musical scale with octaves
In using Bohr's model for describing electron energy levels in hydrogen, electrons are considered as
Particles
Waves
True or false: Applying the Bohr model of the energy levels of electrons in hydrogen works for all elements, especially larger atoms.
True
False
Electrons behave like particles, but they also behave like standing waves. This is called:
Wave-particle duality
Planetary model corollary
Electrons exist in _________, which are arranged in shells.
the nucleus
orbitals
chords
The 1s orbital holds how many electrons?
1
2
6
Which statement about the octet rule is FALSE?
Most lighter elements want eight electrons in their outer shell
The two electrons in the s orbital and six electrons in a p orbital add up to eight electrons in an outer shell
Elements form isotopes to maximize electrons in their outer shell
True or false: the periodic table has information on electron configurations and stability.
True
False
Electrons flow more freely in elements with d orbitals shielded by the next s orbital. These elements are:
Less reactive, more conductive
More reactive, less conductive
True or false: orbitals are useful in understanding how an atom is likely to react.
True
False
True or false: Outer electrons have high ionization energy and less energy is needed to remove them.
True
False
