Classification of Elements and Periodicity in Properties

classification of Elements and Periodicity in Properties 1

These MCQs are intended for checking your Chemistry subject, Chapter classification of Elements and Periodicity in Properties knowledge.

Which of the following element was absent in the Mendeleev's periodic table :-

In a period the elements are arranged in :–

The places that were left empty by Mendeleev's were, for:-

Which of the following statement is false :-

The element with atomic number Z = 115 will be placed in :-

Which pair of successive elements follows increasing order of atomic weight in mendeleev's periodic table

The law of triads is applicable to :-

Which are correct match :-
(a) Eka silicon – Be (b) Eka aluminium – Ga
(c) Eka mangenese – Tc (d) Eka scandium – B

Elements which occupied position in the lother meyer curve, on the peaks, were :–

Which of the following set of elements belongs to same period :-

IUPAC name of the element placed just after actinide series :-

Among the Lanthanides the one obtained by synthetic method is :–

Atomic wt. of P is 31 and Sb is 120. What will be the atomic wt. of As, as per Dobereiners triad rule :-

Mendeleev's periodic table is based on :-

Which statement is wrong for the long form of periodic table :-

Which of the following is/are Dobereiners triad :-
(a) P, As, Sb (b) Cu, Ag, Au
(c) Fe, Co, Ni (d) S, Se, Te
Correct answer is :-

Which of the following sets of elements follows Newland's octave rule :-

Which of the following statement is wrong :-

Which is not anomalous pair of elements in the Mendeleev's periodic table:-

The elements which are cited as an example to prove the validity of mendeleev's periodic law are

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