Question

Define: 1. electronic configuration 2. valence electrons 3. Valency

Answer 1

define:

1. electronic configuration-Electron configuration is the distribution of electrons of an atom or molecule (or other physical structure) in atomic or molecular orbitals

2. valence electrons- Total number of electron in the outermost shell of an atom.

3. Valency-the combining power of an element, especially as measured by the number of hydrogen atoms it can displace or combine with.