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Chapter 6,7,8 Final exam Review (Electron Configurations (1s, 2s, 2p, 3s…
Chapter 6,7,8 Final exam Review
Electron Configurations
1s
2s, 2p
3s 3p 3d
4s 4p 4d 4f
5s 5p 5d 5f
6s 6p 6d 6f
7s 7p 7d
s orbital =2 p orbital =6 d orbital =10 f orbital =14
what is the difference between cations and anions? which of the them gain electrons and loss them? Cation -> positive ion - lose electrons
Anions -> Negative ion - gain electrons
elements/ Electron configuration Argon 18 1s2, 2s2,2p6, 3s2, 3p6/ Potassium 19 1s2, 2s2, 2p6, 3s2, 3p6, 4s1
What are the symbols for the following atoms in their ionic state? A. lithium - Li+1, B. Boron - B+3 C. Oxygen - O-2 D. sulfur - S-2 E. Calcium - Ca +1 F. Iodine - I-1
What tends to happen to the electrons in the following groups to achieve a noble gas configuration? A. Group 1 - lose 1 electron +1 B. Group 2 - lose 2 electron +2 C. Group 3 - lose 3 electron + 3
what are valance electrons? Electrons in the highest energy levels
What is electronegativity? How does it change as you go down the periodic table columns and how when you go across the table from left to right? The ability to draw the electorons over
How can you determine the number of valance electrons in an atom? Look A7 Group H, Group 1-> 1 electron in highest level
when atoms "give up" elections, what charge do they take? when atoms " gain" electrons, what charge do they take? Negative/ positive
What are properties of ionic compounds? (Metal, non metal) 1,High boiling point 2, High melting point 3, ETC
In ionic compounds and molecular compounds, the second element will always end with what ending? NaCl - sodium chloride/ Co2 Carbon
Write the correct formulas and names for the following compounds formed from each pair of ions: Ions K+,S2- Chemical Formulas K2S Compound Name Potassium Sulfide
What is the octet rule? Rule for 8
What is the combination needed to have an ionic compound? What is the combination needed to have a molecular compound? Metal/ non metal
What are polyatomic ions? more than elements broned with other all charges/ Nitrate No3^-1
What is the difference between a shared pair of electrons and an unshared pair of electrons when sketching out the structural formulas of compounds?
How many electrons are shared in a single covalent bond? Double covalent bond? Triple covalent bond?
How many electrons are shared in a single covalent bond? Double covalent bond? Triple covalent bond? single-2e, Double-4e, Triple-6e
What is a coordinate covalent bond? When 1 atom contributes both electrons to the bond
What is the VSEPR theory? What dictates the shape of the compound? Valence Shell Electron Pair Repulsion. Dictotes the shape of the molecules
What is a polar bond? 2-non-Metals that have different electroneagativties