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Glossary of chemistry chapter 11
Created by neenabeena
- What is a cation?
- positively charged ion formed from loss of an electrion. They are smaller than the atom they form from.
- Angle measure for bent
- 109.5
- Angle measure for trigonal planar
- 120 degrees
- Angle measure for trigonal pyramidal
- 109.5
- Do metals lose electrons or gain electrons to get noble gas configuration?
- lose
- Do non-metals lose electrons or gain electrons to get noble gas configuration?
- gain
- What are the guidelines to electronegativity?
- 0-.2: covalent.2-1: moderate polar covalent1-2: very polar covalent2+: ionic
- What characterizes the bent shape?
- Center atom has one or two pairs of unshared electrons.
- What characterizes the trigonal pyramidal shape?
- center atom has one pair of unshared electrons and three attached electrons.
- What does the polarity of a bond depend on?
- The polarity of a bond depends on the difference between the electronegativity values of the atoms forming the bond. Greater difference = more polar
- What is an anion?
- negatively charged ion from gain of an electron. They are larger than the atom they form from.
- What is electronegativity?
- ability of an atom to attract shared electrons.
- What is the Lewis structure?
- A representation of a molecule of polyatomic ion showing how valence electrons are arranged.
- What is the octet rule?
- atoms try to get eight electrons in their valence shell.
