{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

chap5 - Chapter 5 Types of Bons to form Compounds 4.1...

Info icon This preview shows pages 1–5. Sign up to view the full content.

View Full Document Right Arrow Icon
1 Chapter 5 Types of Bons to form Compounds 4.1 Valence e’ e’ in outermost shell are called valence electrons Ca (20 e’) 1s 2 2s 2 2p 6 3s 2 3p 6 4s 2 2 valence e’ S (16 e’) 1s 2 2s 2 2p 6 3s 2 3p 4 6 valence e’ Ar (20 e’) 1s 2 2s 2 2p 6 3s 2 3p 6 8 valence e’ The group number refers to the valence e’ Electron Dot Structure- Put the number of valence e’ around the atomic symbol. L i Be B C N F N e O
Image of page 1

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
2 4.2 Octect Rule Noble gasses are extra stable because they have eight valence e’. The p orbitals are filled. All other elements want to achieve the noble gas e’ configuration. Positive ions- Na loses 1 e’ to become Na+ 1s 2 2s 2 2p 6 3s 1 --------- 1s 2 2s 2 2p 6 + 1e’ Mg 12 p 12 e' 1s 2 2s 2 2p 6 3s 2 2e 8e 2e 1s 2 2s 2 2p 6 2e Same as Ne
Image of page 2
3 Negative Ions- N gains 3e’ to become N 3- 1s 2 2s 2 2p 3 + 3e’ -------- 1s 2 2s 2 2p 6 Group number will determine the number of electrons given up or accepted Group electrons Group 1 2 3 5 6 7 Charge +1 +2 +3 -3 -2 -1 Metals take on positive charges, Non-metals negative charges Examples H + Be 2+ Al 3+ N 3- S 2- Cl - S 16 p 16 e' 1s 2 2s 2 2p 6 3s 2 3p 4 2e 8e 6e 1s 2 2s 2 2p 6 3s 2 3p 6 2e Same as Ne 2 e'
Image of page 3

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
4 Ionic Compounds Positive and negative ions come together to form a compound. Ionic bond. Ex. .. K. + :Br: K+ + Br- KBr . .. Ca: + :F: Mg 2+ + Cl - MgCl 2 . . .. Al: + :Cl: Al 3+ + Cl - AlCl 3 . Write subscripts when doing ionic compounds they do not change. Two wheels per bike.
Image of page 4
Image of page 5
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}