10 Questions
What is the magnitude of electric charge for electrons?
1.60*10-19C
What is the approximate mass of protons and neutrons?
1.67 *10-27 kg
What characterizes each chemical element?
The number of protons in the nucleus
What is the range of atomic number?
From 1 to 92
What is the atomic mass (A) of a specific atom expressed as?
The sum of the masses of protons and neutrons within the nucleus
What are atoms of some elements with two or more different atomic masses called?
Isotopes
What is the significance of the atomic number (Z) for an electrically neutral or complete atom?
It equals the number of electrons
What is the mass of an electron?
9.11 *10-31 kg
What is the difference between protons and neutrons?
Protons are electrically charged, while neutrons are electrically neutral
What is the main difference between atoms of the same element with different atomic masses?
The number of neutrons
This quiz covers the limitations of the Bohr model and the introduction of wave-mechanical models to explain electron behavior. Topics include atomic structure, interatomic bonding, and quantum numbers.
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