Incorrect statement(s) is/are
A. According to Henry Moseley square root of the frequency emitted by metal is directly proportional to atomic number & not the atomic weight.
B. Modern periodic table is based on atomic mass rather than atomic number.
C. In long form of periodic table, elements having similar outer electronic configurations in their atoms are arranged in horizontal rows, referred to as groups.
D. The period number corresponds to the highest principal quantum number (n) of the elements in the period.
Text Solution
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Modern periodic table is based on atomic number rather than atomic mass. In long form of
periodic table, elements having similar outer electronic configurations in their atoms are arranged in vertical columns, referred to as groups.
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