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Mendeleev's Periodic Table

The modern pe...

Question

The modern periodic table was prepared by :

(a) Dobereiner (b) Newlands (c) Bohr (d) Mendeleev

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Solution

Option d is the correct answer.

Dmitri Mendeleev was the first scientist to make a periodic table similar to the one used today

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Q. (a) The modern periodic table has been evolved through the early attempts of Dobereiner, Newland and Mendeleev. List one advantage and one limitation of all three attempts.

(b) Name the scientist who first of all showed that atomic number of an element is a more fundamental property than its atomic mass.

(c) State Modern Periodic law.

Q. Why Dobereiner, Newlands and Mendeleeff were not 100% successful in their classification of elements ? Why the modern table is relatively a better classification ? Predict the reason.

(a) State modern periodic law.

(b) How does the electronic configuration of the atom of an element relate to its position in the modern periodic table?

(c) How could the modern periodic law remove various anomalies of Mendeleev’s periodic table? Explain with examples.

(d) Is it possible to have an element having atomic number 1.5 placed between hydrogen and helium?

(e) Name the scientist who prepared the modern periodic table.

Q. Atomic number is the base of:

(a) Lother Meyer curve
(b) Newland octave rule
(c) Modern periodic table
(d) Doeberiener triad rule
(e) Long-form of periodic table

Q. Read the given statements carefully.
(a) There are total of 7 columns in the Modern periodic table.
(b) Mendeleev arranged the elements in the increasing order of their atomic numbers and according to their chemical properties
(c) Newlands’ law of Octaves worked well with lighter elements only.
The correct statement(s) is/are

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