Modern View of the Atomic Structure PDF
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Uploaded by RazorSharpGingko
Philippine Science High School - Calabarzon Region Campus
Vincent Guiller G. Amores
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Summary
This document covers the Modern View of the Atomic Structure, including topics like Nucleus, Protons, Neutrons, Electrons, Atomic Mass, and Isotopes. It's a chemistry lesson, likely from the Philippine Science High School. The document includes sample problems.
Full Transcript
Republic of the Philippines DEPARTMENT OF SCIENCE AND TECHNOLOGY PHILIPPINE SCIENCE HIGH SCHOOL - CALABARZON REGION CAMPUS Modern View of the Atomic Structure Quarter 1 Week 2c CHEMISTRY 1 – GENERAL INORGANIC CHEMISTRY Vincent Guiller G. Amores Special Science Teacher I...
Republic of the Philippines DEPARTMENT OF SCIENCE AND TECHNOLOGY PHILIPPINE SCIENCE HIGH SCHOOL - CALABARZON REGION CAMPUS Modern View of the Atomic Structure Quarter 1 Week 2c CHEMISTRY 1 – GENERAL INORGANIC CHEMISTRY Vincent Guiller G. Amores Special Science Teacher I Chemistry Unit – CID [email protected] Atomic Structure Nucleus ▷ contains most of the mass of the atom ▷ composed of two kinds of particles: protons & neutrons Protons ▷ carriers of the + charge of the atom ▷ Identify the element (atomic number) Neutrons ▷ Neutral charge ▷ Contributes to mass number and atomic mass 2 Atomic Structure Electrons ▷ Carriers of the – charge of the atom ▷ Occupies the outside area of the atom ▷ Participates in chemical reactions 3 1. Elements Quick overview 4 Names & Atomic Symbols 5 Names & Symbols Isotopes ▷ The same number of protons and different numbers of neutrons Atomic mass ▷ Measure of the mass of the atom ▷ Expressed in atomic mass units (amu) or unified atomic mass units (u) 6 Atomic Mass of an Element % 𝐴𝑏𝑢𝑛𝑑𝑎𝑛𝑐𝑒 Calculation: 𝐴𝑡𝑜𝑚𝑖𝑐 𝑀𝑎𝑠𝑠𝐸𝑙𝑒𝑚𝑒𝑛𝑡 = 𝐼𝑠𝑜𝑡𝑜𝑝𝑒 𝑀𝑎𝑠𝑠𝑒𝑠 𝑜𝑓 𝑒𝑙𝑒𝑚𝑒𝑛𝑡 × 100 7 Sample Problem 1 An unknown element exhibits 46 possible isotopes, but only two are naturally occurring. Given the mass spectrometric data below, calculate the atomic mass of the unknown element and give the possible identity of the unknown element. Isotopes Mass (amu) Abundance (%) Isotope 1 106.90509 51.84 Isotope 2 108.90476 48.16 8 Sample Problem 2 Boron (B; Z = 5) has two naturally occurring isotopes. Find the percent abundances of 10B and 11B given the atomic mass of B = 10.81 amu, the isotopic mass of 10B = 10.0129 amu, and the isotopic mass of 11B = 11.0093 amu. 9 For consultations: Email address: [email protected] Phone number: 0960 200 8383 Office: Ground Floor, ASTB Please inform me at least a day prior to check availability. 10
