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

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