Practise MYP Chemistry questions on 1.5 Electronic Configuration and Valency and review the explanations to check your understanding.
Use these questions for topic practice and to find ideas you want to revisit in your notes or lessons.
The term 'valency' is best defined as an element's:
How many valence electrons are present in a neutral atom of Oxygen (atomic number 8)?
According to Hund's rule, electrons occupy degenerate orbitals singly before pairing to minimize electron–electron repulsion. Which of the following neutral atoms in its ground state possesses the highest number of unpaired electrons?
True or False: In neutral atoms, the subshell is filled before the subshell because it belongs to a lower principal energy level ().
According to the Pauli exclusion principle, when two electrons occupy the same orbital, they must have __________ spins.
number of protons in the nucleus
mass relative to carbon-12
total number of electrons
combining power based on valence electrons
2
4
8
6
Fluorine
Carbon
Oxygen
Nitrogen
True
False
identical
opposite
random
parallel
