protons neutrons electrons abundance 12 C 6 13 C 6 9893 107 Isotopes of an

Protons neutrons electrons abundance 12 c 6 13 c 6

This preview shows page 7 - 17 out of 20 pages.

protons neutrons electrons abundance 12 C 6 13 C 6 98.93% 1.07% Isotopes of an element have similar chemical and physical properties (except mass and radioactivity)
Image of page 7

Subscribe to view the full document.

Atomic mass: mass of one atom of an element (hence one isotopic form) in atomic mass units Atomic mass unit ( u or amu or Da ) = 1/12 mass of one atom of carbon-12 1 u = 1.6605 x 10 -24 g Atomic ± weight ² : average mass of an element including all isotopic forms in their natural abundances Table A.2 A.3
Image of page 8
Amedeo Avogadro (1776 – 1856) "Equal volumes of ideal or perfect gases, at the same temperature and pressure, contain the same number of molecules." Avogadro constant N A = 6.02214179(30) ³ 10 23 particles in one mole 1 mole is the number of atoms in 12 gm of 12 C
Image of page 9

Subscribe to view the full document.

Dmitri Ivanovich Mendeleev (1834 – 1907) Periodic Table
Image of page 10
118 known elements arranged by increasing atomic number ( Z ) into: 7 periods (rows) 18 groups (columns) with similar properties Periodic Table of the Elements
Image of page 11

Subscribe to view the full document.

Periodic Table of the Elements 5
Image of page 12
7 d -block s -block p -block f -block The elements are organized into 18 groups . Each group shares similar chemical behaviour. The 18 groups are organized into 4 blocks . H and He are unique and are not generally placed in a ± block ² . H He Periodic Table of the Elements
Image of page 13

Subscribe to view the full document.

AlkaliMetals AlkalineEarthMetals Pnictogens Chalcogens Halogens NobleGasses Triels Tetrels Transition Metals Lanthanides Actinides 6 Periodic Table of the Elements
Image of page 14
Chapter 2 Chemical Bonding & Lewis Structures
Image of page 15

Subscribe to view the full document.

BONDING CONCEPTS electronegativity ionic
Image of page 16
Image of page 17

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern

Ask Expert Tutors You can ask 0 bonus questions You can ask 0 questions (0 expire soon) You can ask 0 questions (will expire )
Answers in as fast as 15 minutes