Unit 1 quiz 2 Flashcards
Ionic Bond
metal and non metal
(arrows)
Covalent/ molecular
2 non metals
(circles)
electrolyte
a compound that dissolves in water producing a solution that conducts electricity
atomic radius (periodic trend)
- decrease across a period
- increases down a group
Ionic Radius (periodic trend)
- decreases across a period *trend restarts when elements switch from cation to anion
- Increases down a group
Ionization Energy (periodic trend)
-Increases across a period
- decreases down a group
Electron Affinity (periodic trend)
- increases across a period
-decreases down a period
Ionzation energy
the quantity energy required to remove an electron from an atom or ion in the gaseous state
Electron affinity
the energy that occurs when an electron is added to a neutral atom in the gas state
electronegativity
a measure of an atom’s ability to attract shared electrons to itself.
why does Mg have a larger atomic radius than S
this is because Sulfur has more protons and therefore have a stronger connection, pulling the electrons in tighter than mg
why does Na have a larger ionization energy than Cs
this is because Cs has more energy levels so its outermost electron is more easily removed
Ionic Compound properties
- hard and brittle
- high melting point
-dissolves in water
-conducts electricity
molecular compound properties
-soft solids, liquid or gas
- has odor
- low melting point
does not conduct electricity