MTL 200 certification (Atomic Structure and
Interatomic Bonding) ASSESSMENT GUIDE
2025|MOST COMMON QUESTIONS WITH
CORRECTLY VERIFIED ANSWERS (the latest
ones)|ALREADY A+ GRADED|GUARANTEED
PASS/wishing you success in your studies
The number of protons in the nucleus is know as: - The atomic number
The sum of masses of protons and neutrons within the nucleus is known as: - The atomic
mass
Isotopes - Atoms of the same element that have different numbers of neutrons
Avogradros number - 6.02x10^23
Bohr atomic model - Electrons are assumed to revolve around the atomic nucleus in
discrete orbitals.
Wave-mechanical model - electron is considered to exhibit both particle-like and wave-
like characteristics
What are the four quantum numbers? - n, ℓ, mℓ, and ms
What does the principal quantum number (n) describe? - The energy of an electron in an
atom
What does the quantum number (ℓ) describe? - The subshell (s, p, d, f) and the shape of
an electron's orbital
What does the quantum number (mℓ) describe? - The orientation of an electron's orbital
What does the quantum number (ms) describe? - The spin of an electron in an atom
Interatomic Bonding) ASSESSMENT GUIDE
2025|MOST COMMON QUESTIONS WITH
CORRECTLY VERIFIED ANSWERS (the latest
ones)|ALREADY A+ GRADED|GUARANTEED
PASS/wishing you success in your studies
The number of protons in the nucleus is know as: - The atomic number
The sum of masses of protons and neutrons within the nucleus is known as: - The atomic
mass
Isotopes - Atoms of the same element that have different numbers of neutrons
Avogradros number - 6.02x10^23
Bohr atomic model - Electrons are assumed to revolve around the atomic nucleus in
discrete orbitals.
Wave-mechanical model - electron is considered to exhibit both particle-like and wave-
like characteristics
What are the four quantum numbers? - n, ℓ, mℓ, and ms
What does the principal quantum number (n) describe? - The energy of an electron in an
atom
What does the quantum number (ℓ) describe? - The subshell (s, p, d, f) and the shape of
an electron's orbital
What does the quantum number (mℓ) describe? - The orientation of an electron's orbital
What does the quantum number (ms) describe? - The spin of an electron in an atom
