Q241
Open questionWhich of the following groups has one electron in the outermost shell?
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Chemistry GK · all questionsPeriodic Classification of elements
Periodic Classification of elements
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Q242
Open questionElements in the modern Periodic Table are arranged in . . . . . . . . vertical columns.
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Q243
Open questionWhat are the elements with lanthanum in group 3, period 6 called?
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Q244
Open questionThe ionisation potential of nitrogen is
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Q245
Open questionWhich of the following atoms has the highest diameter?
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Q246
Open questionWhat are transition elements?
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Q247
Open questionThe element with atomic number 56 belongs to which block?
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Q248
Open questionWhich of the following atomic numbers have a pair of elements belonging to the same group?
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Q249
Open questionThe atomic radius is used to measure the size of . . . . . . . .
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Q250
Open questionThe chemistry of lithium is very similar to that of magnesium even though they are placed in different groups. The reason is
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Q251
Open questionWhat is the first metallie element in the modern periodic table?
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Q252
Open questionWhat is Mendeleev's recurrent law based on?
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Q253
Open questionIn the modern periodic table, there are only gases are presetn in the . . . . . . . . period.
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Q254
Open questionIn Mendeleev's periodic table, . . . . . . . . before the nickel?
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Q255
Open questionThe alkali metals have relatively low melting point.Which one of the following alkali metals is expected to have the highest melting point?
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Q256
Open questionTo remove one electron from the outermost orbit or the shell of the neutral gaseous atom . . . . . . . . is needed.
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Q257
Open questionThe ionization energy of an element depends on the . . . . . . . .
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Q258
Open questionWho classified elements based on atomic numbers?
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Q259
Open questionIn which of the following groups of modern periodic table, noble gases are placed?
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Q260
Open questionElements . . . . . . . . were placed in the periodic table of Newland with halogens.
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