periodicity: definitions Flashcards
(6 cards)
1
Q
first ionisation energy
A
the energy required to remove one mole of electrons from one mole of gaseous atoms
2
Q
[] ionisation energy
A
the energy required to remove one mole of electrons from one mole of gaseous ⁿ⁺ ions
3
Q
periods (ptote)
A
horizontal rows of elements with similar chemical and physical properties
4
Q
groups (ptote)
A
vertical columns of elements with similar chemical and physical properties
5
Q
metalloids
A
elements on and around the metal/nonmetal dividing line
6
Q
blocks (of the periodic table)
A
correspond to the shell where the outermost (highest energy) electron is found