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picture1_Pdf Printable Periodic Table 196000 | 3 1 Item Download 2023-02-07 07-01-19


picture2_Pdf Printable Periodic Table 196000 | 3 1 Item Download 2023-02-07 07-01-19 picture3_Pdf Printable Periodic Table 196000 | 3 1 Item Download 2023-02-07 07-01-19

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File: Pdf Printable Periodic Table 196000 | 3 1 Item Download 2023-02-07 07-01-19
CBSE TEST PAPER-01 CLASS - XI CHEMISTRY (Classification of Elements and Periodicity in Properties) General Instruction: All questions are compulsory. Marks are given alongwith their questions. 1. How many elements ...

icon picture PDF Filetype PDF | Posted on 07 Feb 2023 | 2 years ago
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...Cbse test paper class xi chemistry classification of elements and periodicity in properties general instruction all questions are compulsory marks given alongwith their how many known at present who was the first scientist to classify according what is basis triad formation stale modern periodic law define state mendeleev s did arrange name two whose existence were predicted by though they not exist then describe main features table ans there about german chemist johann dobereiner early consider idea trends among element middle each triads had an atomic weight half way between weights other also those members relationship as physical chemical functions numbers states that function arranged horizontal rows vertical columns a order increasing such with similar occupied same column or group only gallium germanium but described some i called groups periods ii eight viii indicated roman numerals occupy three e nine iii seven accommodate more period divided into halves placed upper left corn...
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