Trends Flashcards
(23 cards)
What is Ionziation Energy?
Ionization energy is energy required to remove an electron from one or more atom
What is it going to take to pull an electron away
It’s gong to take energy to pull an electron away
Which group is the most stable in the PT
The noble gases
Which group is the most reactive in the PT?
The alkali metals
The higher the ionization energy, the harder it is to remove an electron
True
Ionization energy generally decreases moving top to bottom down a column
true
As you move down the left to the right on the PT , the atomic radius decrease
true
as you move down the period table the atomic radius imcreases
true
What is electron affinity
electron affinity is the change in energy (in kJ/mole) of a neutral atom (in the gaseous phase) when an electron is added to the atom to form a negative ion. In other words, the neutral atom’s likelihood of gaining an electron.
What happens when an electron is added to a neutral atom
when an electron is added to a neutral atom energy is released; thus, the first electron affinities are negative.
Is the first energy affinity negative or positive
the first energy affinity is negative
is the first energy affinity negative or positive?
the first energy affinity is negative
Why do metals have a lower electron affinity
metals have a lower electron affinity because metals have less chance to gain electrons because it is easier to lose their valance electrons and form cations.
Does electron affinity decease or increase in alkali metal group going top to bottom
Electron affinity decrease going top to bottom
Do non-metals have higher or lower electron affinity than metal.
Non metals have higher electron affinity
When an electron is added to a nonmetal atom, is energy released or absorbed?
when a electron is added to a nonmetal atom energy is released
Why are atoms with a low electron affinity more likely to lose electrons than gain electrons?
Atoms with a low electron affinity want to give up their valence electrons because they are further from the nucleus; as a result, they do not have a strong pull on the valence electrons.
Why do metals have a low electron affinity?
Metals have a low electron affinity because they want to give up their valence electrons rather than gain electrons, which require more energy than necessary.
What is atomic radius
Atomic radius is generally stated as being the total distance from an atom’s nucleus to the outermost orbital of electron
which has a bigger atomic radius
Cations have smaller ionic radii than anions.
An atom gets larger as the number of electronic shells increase
true
the size of an atom will decrease as you move from left to the right of a certain period.
true
The size of an atom will decrease as you move from left to the right of a period
true
