Statement 1S1- There was no place for isotopes of elements in Mendel-ev-s periodic table- Statement 2S2- Mendel-ev-s periodic table was based on increasing atomic mass of the elements-

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Chemistry

Mendeleev’s Periodic Table

Statement 1S1...

Question

Statement 1(S1): There was no place for isotopes of elements in Mendeléev’s periodic table.
Statement 2(S2): Mendeléev’s periodic table was based on increasing atomic mass of the elements.

Both statements are false.

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S2 is true but S1 is false.

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S1 is true but S2 is false.

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Both statements are true.

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Solution

The correct option is D Both statements are true.
Option 'a' is the correct answer.

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Which element was placed before iodine in Mendeleev periodic table is.

state the periodic law in which mendeleev s periodic table was based .why was this periodic law changed ? name two elements whose properties were predicted on the basis of their position in mendeleevs periodic table.

Which of the following statement (s) about the Modern Periodic Table are incorrect

(i) The elements in the Modern Periodic Table are arranged based on their decreasing atomic number.

(ii) The elements in the Modern Periodic Table are arranged based on their increasing atomic masses.

(iii) Isotopes are placed in an adjoining group (s) in the Periodic Table.

(iv) The elements in the Modern Periodic Table are arranged based on their increasing atomic number.

Q. Based on the statements given below, choose the correct one’s regarding limitations of Mendeleev’s periodic table.

I. The position of hydrogen in the periodic table was uncertain.
II. Isotopes of elements were not given different positions in the table.
III. In the arrangement of Te and I, the increasing order of atomic mass was not obeyed.

Q. Assertion :Mendeleev's periodic table have some demerits. Reason: There was no place for all isotopes of the elements and some heavy elements were placed before lighter elements.

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Statement 1(S1): There was no place for isotopes of elements in Mendeléev’s periodic table. Statement 2(S2): Mendeléev’s periodic table was based on increasing atomic mass of the elements.

The correct option is D Both statements are true.Option 'a' is the correct answer.

Statement 1(S1): There was no place for isotopes of elements in Mendeléev’s periodic table.
Statement 2(S2): Mendeléev’s periodic table was based on increasing atomic mass of the elements.

The correct option is D Both statements are true.
Option 'a' is the correct answer.