What were the main demerits of Mendeleev's periodic table? (i) Hydrogen has been placed in group I though it resembles to group VII as well. (ii) Position of some elements was not justified. (iii) Isotopes were not given separate places. (iv) Lanthanides and actinides were not included in the table.

Question

What were the main demerits of Mendeleev's periodic table?
(i) Hydrogen has been placed in group I though it resembles to group VII as well.
(ii) Position of some elements was not justified.
(iii) Isotopes were not given separate places.
(iv) Lanthanides and actinides were not included in the table.

A. (i), (ii) and (iii)

B. (i), (ii), (iii) and (iv)

C. (ii) and (iv)

D. (i), (iii) and (iv)

Answer : (i), (ii), (iii) and (iv)

Releted MCQ Question on
Inorganic Chemistry >> Classification of Elements and Periodicity in Properties

Releted Question 1

The correct order of second ionisation potential of carbon, nitrogen, oxygen and fluorine is

A. $$C > N > O > F$$

B. $$O > N > F > C$$

C. $$O > F > N > C$$

D. $$F > O > N > C$$

View Answer

Releted Question 2

The element with the highest first ionization potential is

A. boron

B. carbon

C. nitrogen

D. oxygen

View Answer

Releted Question 3

The first ionisation potential in electron volts of nitrogen and oxygen atoms are respectively given by

A. $$14.6,13.6\,$$

B. $$13.6,14.6$$

C. $$13.6,13.6$$

D. $$14.6,14.6$$

View Answer

Releted Question 4

Atomic radii of fluorine and neon in $$\mathop {\text{A}}\limits^ \circ $$ngstorm units are respectively given by

A. $$0.72,1.60$$

B. $$1.60,1.60\,$$

C. $$0.72,0.72\,\,$$

D. None of these values

View Answer

Practice More Releted MCQ Question on
Classification of Elements and Periodicity in Properties

Practice More MCQ Question on Chemistry Section

Physical Chemistry Some Basic Concepts in Chemistry Stoichiometry States of Matter Solid, Liquid and Gas Atomic Structure Chemical Thermodynamics Solutions Solid State Surface Chemistry Chemical Equilibrium Ionic Equilibrium Chemical Kinetics Redox Reaction Electrochemistry Nuclear Chemistry

Inorganic Chemistry Chemical Bonding and Molecular Structure Ores and Metallurgy Classification of Elements and Periodicity in Properties Hydrogen S - Block Elements P - Block Elements D and F Block Elements Co - ordination Compounds Qualitative Analysis Preparation and Properties of Compounds Environmental Chemistry

Organic Chemistry General Organic Chemistry Isomerism Purification and Characterisation of Organic Compounds Hydrocarbons (Alkane, Alkene and Alkyne)Aromatic hydrocarbon Electrophilic Aromatic Substitution (Haloalkanes and Haloarenes)Alkyl and Aryl Halide Reactions on Benzene Alcohol, Phenol and Ether Aldehyde and Ketone Carboxylic Acid Organic Compounds Containing Nitrogen Name Reactions Polymers Biomolecules Chemistry in Everyday Life Practical Organic Chemistry

Releted MCQ Question on Inorganic Chemistry >> Classification of Elements and Periodicity in Properties

The correct order of second ionisation potential of carbon, nitrogen, oxygen and fluorine is

The element with the highest first ionization potential is

The first ionisation potential in electron volts of nitrogen and oxygen atoms are respectively given by

Atomic radii of fluorine and neon in $$\mathop {\text{A}}\limits^ \circ $$ngstorm units are respectively given by

Practice More Releted MCQ Question on Classification of Elements and Periodicity in Properties

Practice More MCQ Question on Chemistry Section

Releted MCQ Question on
Inorganic Chemistry >> Classification of Elements and Periodicity in Properties

Practice More Releted MCQ Question on
Classification of Elements and Periodicity in Properties