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Q.

Which of the following statements is/are incorrect regarding Mendeleev's periodic table?
a) Mendeleev considered compounds formed by element with oxygen and hydrogen.
b) In the table Ni is placed before Co.
c) Eka-silicon in Mendeleev's periodic table is gallium.
d) The properties of elements are the periodic function of their atomic masses.

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a

Only (b)

b

Only (c)

c

Both (b) & (c)

d

Both (a) & (d)

answer is C.

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Detailed Solution

Incorrect statements regarding Mendeleev's periodic table are:

$\to$ In Mendeleev's periodic table Co is placed before Ni.

$\to$ Eka – silicon in Mendeleev's periodic table is Germanium not Gallium

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Which of the following statements is/are incorrect regarding Mendeleev's periodic table?a) Mendeleev considered compounds formed by element with oxygen and hydrogen.b) In the table Ni is placed before Co.c) Eka-silicon in Mendeleev's periodic table is gallium.d) The properties of elements are the periodic function of their atomic masses.