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04:- Who........ 1-Made the first real periodic table. na elements according to their propertie= ...) atomic number and not their atomic weights . (............. aason for : ing elements according to their propertie-

04:- Who........ 1-Made the first real periodic table. na elements according to their propertie= ...) atomic number and not their atomic weights . (............. aason for : ing elements according to their propertie-

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Science Department 2nd Prep. 1st Term ITIS 04:- Who........ 2 1-Made the first real periodic table. (...... ...) atomic number and not their atomic weights . (............. 05:- Give reason for : 2-Elements of same group have similar properties. 06:-Locate the position of the following elements in the modern periodie table : 1-Hydrogen (,H) 2- Neon (10 Ne) 3-Argon (18 Ar ) 4-Calcium (20 Ca) 07:- Calculate the atomic numbers of the following elements : 1-An element is located in the 1ª* period and group (1A) 2-An element is located in the 3d period and group (7A)
Transcribed Image Text:Science Department 2nd Prep. 1st Term ITIS 04:- Who........ 2 1-Made the first real periodic table. (...... ...) atomic number and not their atomic weights . (............. 05:- Give reason for : 2-Elements of same group have similar properties. 06:-Locate the position of the following elements in the modern periodie table : 1-Hydrogen (,H) 2- Neon (10 Ne) 3-Argon (18 Ar ) 4-Calcium (20 Ca) 07:- Calculate the atomic numbers of the following elements : 1-An element is located in the 1ª* period and group (1A) 2-An element is located in the 3d period and group (7A)
13 The 1st real periodic table for classifying elements. (.. . The table in which elements are arranged according to their atomic ....) numbers. 2-A group of elements found in the middle of the periodic table and includes ten vertical columns. 4-Elements of f-block in the modern periodic table . 03- Put () or (x)then correct the wrong one : 1-Mendeleev discovered that the properties of elements were repeated periodically by the beginning of each new group . 2-The modern periodic table is classified into 5 blocks .(..... 3-Inert gases are located in zero on the left side of the periodic table. (... ........) (..... (... ...) (..... ...) (.. .. 4-An element lies in period (3) and group (2A),then its atomic number is 13 (... ....) ...) ) 25
Transcribed Image Text:13 The 1st real periodic table for classifying elements. (.. . The table in which elements are arranged according to their atomic ....) numbers. 2-A group of elements found in the middle of the periodic table and includes ten vertical columns. 4-Elements of f-block in the modern periodic table . 03- Put () or (x)then correct the wrong one : 1-Mendeleev discovered that the properties of elements were repeated periodically by the beginning of each new group . 2-The modern periodic table is classified into 5 blocks .(..... 3-Inert gases are located in zero on the left side of the periodic table. (... ........) (..... (... ...) (..... ...) (.. .. 4-An element lies in period (3) and group (2A),then its atomic number is 13 (... ....) ...) ) 25
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