Q121
Open question. . . . . . . . is not a periodic feature related to the characteristics of elements.
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Chemistry GK · all questionsPeriodic Classification of elements
Periodic Classification of elements
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Q122
Open questionChoose the correct sequence of electrical resistivity of metals.
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Q123
Open questionIn the Mendeleev periodic table, gaps were left for undiscovered elements. Which of the following elements later found a place in the periodic table?
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Q124
Open questionThe electronic configuration of an element is 2, 8, 6. It is related to . . . . . . . . .
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Q125
Open questionThe number of shells in the elements of the third period is . . . . . . . .
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Q126
Open questionIn Mendeleev's periodic table, which of the following group of elements later found a place in the table?
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Q127
Open questionHow many metalloids are there in the fourth period of the modern periodic table?
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Q128
Open questionIn both elements of the 1st period, in . . . . . . . . . the valence electrons are present.
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Q129
Open questionThe ability of an atom in a chemical compound to attract shared electron is termed as
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Q130
Open questionThe atomic number of an element is 17, what is it?
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Q131
Open question. . . . . . . . has the largest electron affinity?
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Q132
Open questionWhich of the first element on the Periodic Table?
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Q133
Open questionWhat are the commonly known elements F, Cl, Br, I and At?
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Q134
Open questionIn a periodic table, while moving from left to right in a period, number of remains same.
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Q135
Open questionElectronegativity is the measure of the . . . . . . . . of an atom.
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Q136
Open questionElements in the same group is Similar in
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Q137
Open question. . . . . . . . melting point is very low.
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Q138
Open questionThe element that has the highest electron affinity in the third period is that . . . . . . . . is.
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Q139
Open questionAlkaline metals are placed in which group in the modern periodic table?
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Q140
Open questionAccording to Newlands' law of octaves, how many elements exist in nature?
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