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Periodic Properties of Elements mcq for Students
Existence of some undiscovered elements was first predicted by
a. Mendeleef
b. Lother Meyer
c. Pettenkofer
d. Dechacourtois
Option a – Mendeleef
Mendeleef proposed an element with atomic Mass 68 and named it
a. Eka Boron
b. Eka Carbon
c. Eka Aluminum
d. Eka Iron
Option c – Eka Aluminum
The scientist who discovered the element Mendeleef called eka aluminum was
a. Lother Meyer
b. Nilson
c. Johnson
d. Deboisbaudran
Option d – Deboisbaudran
Deboisbaudran later named the element eka aluminum as
a. Silicon
b. Scandium
c. Gallium
d. Indium
Option c – Gallium
Mendeleef predicted another element with atomic Mass 44 and referred to it as
a. Eka Germanium
b. Eka Boron
c. Eka Chlorine
d. Eka Copper
Option b – Eka Boron
The element referred to as eka boron was discovered by
a. Nilson
b. Johnson
c. Thomson
d. Robinson
Option a – Nilson
Nilson identified the element eka boron as
a. Germanium
b. Scandium
c. Titanium
d. Vanadium
Option b – Scandium
Mendeleef grouped all elements with valency one under
a. Group I
b. Group II
c. Group III
d. Group IV
Option a – Group I
A major criticism of Mendeleef’s Periodic Table was
a. Element arrangement did not follow Periodic trends
b. Oxidation states varied within the same group
c. Properties differed greatly among elements in the same group
d. None of the above
Option a – Element arrangement did not follow Periodic trends
One of the main objections to Mendeleef’s table was
a. Elements in the same group had different characteristics
b. No clear distinction between Metals and non-Metals
c. Lanthanides and actinides were not separately placed
d. All of the above
Option d – All of the above
Mendeleef’s Periodic arrangement was primarily based on
a. Atomic Mass
b. Atomic number
c. Atomic radius
d. Atomic volume
Option a – Atomic Mass
As per Mosley, the most fundamental characteristic of an element is its
a. Atomic Mass
b. Atomic number
c. Atomic radius
d. Atomic volume
Option b – Atomic number
The law stating that element properties repeat periodically with atomic number is
a. Mendeleef’s Periodic law
b. Modern Periodic law
c. Law of octaves
d. Lother Meyer’s theory
Option b – Modern Periodic law
The modern version of the periodic law was given by
a. Mendeleef
b. Dobereiner
c. Mosley
d. Nilson
Option c – Mosley
The modern Periodic Table is commonly referred to as
a. The long form of the Periodic Table
b. Mosley’s Periodic Table
c. Both a and b
d. None of the above
Option a – The long form of the Periodic Table
The modern table links element properties with their
a. Atomic Mass
b. Atomic radius
c. Electronic structure
d. Atomic volume
Option c – Electronic structure
The long form of the Periodic Table contains
a. 7 rows and 15 columns
b. 15 rows and 7 columns
c. 9 rows and 18 columns
d. 7 rows and 18 columns
Option d – 7 rows and 18 columns
The rows in the modern Periodic Table are known as
a. Periods
b. Groups
c. Triads
d. None of these
Option a – Periods
The columns in the Periodic Table are called
a. Periods
b. Groups
c. Both a and b
d. None of these
Option b – Groups
How many columns (groups) are there in the modern Periodic Table?
a. 7
b. 9
c. 15
d. 18
Option d – 18
Total number of groups in the current Periodic Table is
a. 10
b. 15
c. 16
d. 18
Option c – 16
In the modern periodic table, the three central columns are treated as
a. One group
b. Two groups
c. Three groups
d. None of the above
Option a – One group
Lanthanides and actinides are placed separately at the
a. Right end
b. Bottom
c. Left side
d. None of these
Option b – Bottom
The first period includes
a. Only two elements
b. Only three elements
c. Only one element
d. Only eight elements
Option a – Only two elements
The two elements in the first period are
a. He and Ne
b. Li and Na
c. H and He
d. Be and Mg
Option c – H and He
The second period contains
a. Two elements
b. Eight elements
c. Eighteen elements
d. Thirty-two elements
Option b – Eight elements
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