1) Periodie placement of these elements in the periodic table is given
A) Nobel gases B) Alkali metal C) Halogen DActinide
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Answer:
Non-metals are placed in the upper right corner of the periodic table. i. The horizontal rows of elements in a periodic table are called periods. There are seven periods in the long form of the periodic table.
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Explanation:
A) nobel gas -18(VIIIA) group are shown at the left corner of the table
B) Alkali metal - 1(IA) group are shown at right starting of the table
c) Halogen-17(VIIA) group are shown at left before the nobel gases
d) Actinides- 5f elements are shown separately below the periodic table
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