Chapter 4: Periodic Trends of the Elements Flashcards
What are the main group elements?
(representative elements) Group 1A through 7A
What are the transition metals located?
Groups 1B and 3B through 8B.
What are the noble gases?
8A. They are completely filled p orbitals.
What are lanthanides and actinides considered?
The F block
What is valence electron?
outermost electrons of an atom
What is effective charge (zeff)?
the actual magnitude of positively charged that is “experienced” by an electron in the atom.
What is the shielding constant?
sigma
What is the symbol for nuclear charge?
Z
What happens from left to right?
Z(eff) increases steadily b/c the core electrons remain the same but Z increases.
What is the Atomic Radius?
The distance between nucleus and atom and its valance shell.
What is the metallic Radius?
Half the distance between the nuclei of two adjacent, identical metal atoms.
What is the covalent radius?
Half the distance between adjacent, identical nuclei connected by a chemical bond.
Does Atomic radius increases from top to bottom down a group?
YES
Does Atomic Radius decreases from left to right?
YES
What is Ionization energy? (IE)
the main energy to remove an electron from an atom in gas phase.
