The Periodic Table Flashcards
A Column is a
Group
A row is a
Period
The number of e- is equal to
The atomic number
The number of neutrons in an isotope is
The mass number minus the atomic number
Why do atoms in the same group react the same
Reactions occur when 2 atoms collide or when then outermost electrons colide. Atoms in the same groups have the same # of V e-
Isoelectric
Atoms and ions that have identical e- configurations
Differentiating electrons
The e- in a neutral element that makes it different from the previous elements
These elements under normal conditions are liquids
Mercury and bromine
The metallic character of the elements increases from________ of the periodic table
Top to bottom
Melting and boiling point of metals tents to _______ from top to bottom of a group
Decrease
Nonmetal a tend to ___________ from top to bottom of a group in Melting and boiling points
Increase
Atomic radius ________ from too to bottom of a group because ________
Increases
Each increase in period number invokes another larger energy level
Atomic radius _________ from left to right due to _______
Decrease
An increase in the effective nuclear charge
Core electrons
Nonvalence electrons
Core electrons guard valence electrons from
A positive nuclear charge
