Worksheets3 - Electrons
Total questions: 10
Worksheet time: 10mins
What is an electron?
An electron is a negatively charged subatomic anti-particle that can be either bound to an atom or free (not bound)
An electron is a negatively charged subatomic particle that can be either bound to an atom or free (not bound)
the negatively charged antiparticle of proton, which have the same mass but opposite charge
a particle representing a quantum of light or other electromagnetic radiation
Which is not a characteristics of electrons?
wave and matter properties
move freely everywhere
point-like particles in a zeroth dimension
so small that can be considered as a point
Which of the particle that defines the chemical properties of an element?
nucleons (both protons and neutrons)
only protons, not neutrons, although they are both nucleons
every electron
valence electrons
What stabilize electrons in atoms, preventing them from escaping the atom?
the repulsing forces of the electrons towards each other
the strong interaction and the weak interaction
the attracting forces of the nucleus to electrons
gravity
Electron can absorb which particles to get to the excited states?
protons
other electrons
neutrons
photons
Which equation help humanity to visualize the shape of atomic orbitals?
Schrödinger's wave equation
Einstein's Equation
Bohr's calculations
Clausius-Clapeyron's Equation
What interaction what electrons have towards each other? (Red Arrows)
Attractive force
Normal force
Repulsive force
Frictional force
Why does the first ionization energy of noble gases is generally more positive than of other elements?
Because their electron configuration is perfect and it requires an enormous amount of energy to ruin it.
Because electrons, in general, tends to stay in orbitals and getting them out of their existing state would take up energy
Because the process goes against the tendancy of "increasing entropy"
Because this process is endothermic while the other are exothermic
What is the anti-particle of an electron?
proton
photon
posistron
antineutrino
The aborbance of photons would take an electron from ground state to excited states, the energy of which is ΔE > 0. In the reverse process, when an electron goes from an excited state to the ground state, it release an amount of ΔE'. What is the comparison of ΔE and ΔE', in the reality?
ΔE < ΔE'
ΔE > ΔE'
ΔE = ΔE'
ΔE is irrelavent to ΔE'
