Chapter01notes

Chapter01notes - 1. Atomic Structure 1 1. Atomic Structure...

Info iconThis preview shows pages 1–8. Sign up to view the full content.

View Full Document Right Arrow Icon
1 1. Atomic Structure 1 1. Atomic Structure - Isotopes (1) 12 C 13 C 14 C (2) 1 H 2 H 3 H 2 Isotopes are two atoms of the same element having a different number of neutrons.
Background image of page 1

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

View Full DocumentRight Arrow Icon
2 Elements in the same row are similar in size. 1. Atomic Structure -The Periodic Table Elements in the same column have similar electronic and chemical properties. 3 The Second Row 1. Atomic Structure –valence electrons Each of the four orbitals in the second shell holds _____ electrons. The second row of the periodic table consists of eight elements, obtained by adding electrons to the 2 s and three 2 p orbitals. There is a maximum capacity of ______________electrons for elements in the second row. 4
Background image of page 2
3 1. Atomic Structure- structural theory, valence electrons and number of bonds Elemen #ofcova lentbond Element # of covalent bonds Element # of covalent bonds HF CC l NB r O 5 I C 4 bonds C C Br C H B 6 C Never draw 5 (or more) bonds on carbon
Background image of page 3

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

View Full DocumentRight Arrow Icon
4 1. Atomic Structure- structural theory, importance of structural formulas and shape ISOMERS ISOMERS: 7 2. Chemical Bonding Ionic 8 Covalent
Background image of page 4
5 ± Octet Rule In forming compounds atoms from 2. Chemical Bonding – Octet Rule In forming compounds, atoms from second row of periodic table gain, lose, or share electrons to give a stable electron configuration characterized by 8 valence electrons When the octet rule is satisfied for C, N, O 9 and F, they have an electron configuration analogous to the noble gas Ne 2. Chemical Bonding - Nonbonded Electrons When second-row elements form fewer than four bonds, their octets consist of both bonding (shared) and nonbonding (unshared) electrons. Unshared electrons are also called lone pairs . 10
Background image of page 5

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

View Full DocumentRight Arrow Icon
6 2. Chemical Bonding - Electronegativity element (EN) H (2.1) L Be B C N O F Li (1.0) Be (1.6) ……. .……… (2.0) (2.5) (3.0) (3.5) F (4.0) Na (0.9) Mg (1.2) ………………. ..…… Si (1.8) P (2.1) S (2.5) Cl (3.0) K (0.8) ………………………. .………………………………… Br (2.8) 11 Rb (0.8) ………………………………………………. .………… I (2.5) Cs (0.7) …………………………………………………………………… 2. Chemical Bonding Ionic Covalent 12
Background image of page 6
7 2. Chemical Bonding Polar Covalent - covalent bond between two atoms of different electronegativity : : : H C H H Cl EN Carbon = ______ EN chlorine = _____ 13 Polar covalent bond
Background image of page 7

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

View Full DocumentRight Arrow Icon
Image of page 8
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 29

Chapter01notes - 1. Atomic Structure 1 1. Atomic Structure...

This preview shows document pages 1 - 8. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online