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Question
Mendeleev's periodic table : atomic mass : : Modern periodic table : _______
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Solution
Mendeleev's periodic table : atomic mass : : Modern periodic table : atomic number
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In the Modern Periodic Table, which are the metals among the first ten elements?
The position of three elements A, B and C in the Periodic Table are shown below –
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Group 16
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Group 17
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A
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B
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C
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(a) State whether A is a metal or non-metal.
(b) State whether C is more reactive or less reactive than A.
(c) Will C be larger or smaller in size than B?
(d) Which type of ion, cation or anion, will be formed by element A?
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(a) Elements in modern periodic table are arranged on the basis of increasing atomic masses.
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