Question

The energy of a photon is inversely proportional to __________________

2) The visible light is comprised in the electromagnetic spectrum (approximately) between the wavelengths of __________ nm and ________ nm

3) Attractions and repulsions between charged particles (electrons and protons), are described by _____________________

4) _____________ states that when filling degenerate orbitals, electrons fill them singly first, with parallel spins.

5) The electron configuration (of the valence electrons only) for the element oxygen is ___________

6) The third ionization energy (in kJ/mol) of the element Cl is ____________

7) The electron affinity of the element Ca (in kJ/mol) is ____________

8) Order from higher to smaller the degree of metallic character of the following elements: Pb, Fe, Br, and Mn __________________

9) In ionic bonds electrons are ______________

10) How many electrons participate in the covalent bond of the molecule N₂? ________