Which of the following types of elements show variable valency?
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Chemistry GK · all questionsPeriodic Classification of elements
Periodic Classification of elements
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Californium is a member of the . . . . . . . . group.
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How does the metallic property of an element change in the modern periodic table?
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The rule of octaves was applicable only till . . . . . . . .
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When the elements are arranged in increasing order of atomic weights, the atomic weight of the middle element is approximately the average of the atomic weights of the other two elements' - this rule is known as-
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Which groups of the modern periodic table consists of a full-covering valence electron and chemically inert elements?
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Which of the following always increase while moving from top to bottom in a group?
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The Law of Triad was given by
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Name the Noble gas placed in the third period and eighteen group of modern periodic table-
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. . . . . . . . is not an actinoid?
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Na, Mg, Al, Si, P, S, Cl and Ar are related to . . . . . . . . period of modern periodic table.
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Newland considered that only . . . . . . . . elements were present in nature?
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What will be the electronic configuration of an element related to the second period and having strong chaining properties?
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Which of the following groups of atomic numbers are groups of alkaline metals?
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The atomic number of an element is 17. What is its place in the modern periodic table?
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Which of the following elements has the highest electronegativity?
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According to IUPAC, total number of groups and periods in the periodic table respectively are
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Which is the most reactive metal?
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Ionization potential of nitrogen is . . . . . . . .
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Which of the following is not correct with reference to Neil Bohr's modern periodic table?
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