Atomic Radius Flashcards
Does an atomic radius increase or decrease as you go down a group/family on the periodic table?
Increase
What causes atomic radius to increase as you go down a group/family on the periodic table
Each atom has another energy level
Define an ion
Atom that has gained or lost one or more electrons, giving it a net electrical charge
What is the difference between a cation and an anion?
Anion is an atom that gained an electron
Cation is an atom that loses an electron
Which is larger, Ca2+ or Ca?
Why
Ca
Ca2+ has lost 2 electrons which gives it a stronger charge in the nucleus drawing the electrons closer giving Ca2+ a smaller atomic radius
Which is larger, F-1 or F
Why
F-1
GAined an electron which causes the electron cloud to expand an increase atomic radius
How does the ionic radius of a nonmetal compare with its atomic radius?
as you go down it decreases, across it increases
ionic radius is generally larger than the atomic radius for a nonmetal
Define ionization energy
The amount of energy required to completely remove an electron from an atom
What trend in ionization energy do you see as you go down a group/family on the periodic table?
decrease in ionization energy
What causes the trend of a decrease in ionization energy as you go down a group/family on the periodic table
The electrons are closer, therefore harder to pull off.
Define electronegativity
The tendency for an atom to attract electrons to itself when chemically combined with another element.
What trend in electronegativity do you see as you go down a group/family on the periodic table?
Decrease
What trend in electronegativity do you see as you go across a group/family on the periodic table?
Increase
Which element has the greatest electronegativity>
Flourine
Which atom has the largest atom radius
- Al
- B
Al
