If Mendeleev had known about the concept of isotopes, how would his periodic table have been different?
Isotopes of the same element would have been placed in different groups
Isotopes of the same element would have occupied the same position
The table would have been organized based on neutron number
The concept of periodicity would have been discarded
Related Questions
Which of the following was a significant advantage of Mendeleev's periodic table?
Perfect arrangement of all known elements
Explanation of isotopic variations
Prediction of properties of undiscovered elements
Inclusion of noble gases
Mendeleev placed some elements with higher atomic weights before elements with lower atomic weights. This was done to:
Follow alphabetical order
Account for undiscovered elements
Maintain the periodicity of chemical properties
Reflect the abundance of elements
Which of the following pairs of elements would have been placed in the SAME group in Mendeleev's periodic table but DIFFERENT groups in the modern periodic table?
Tellurium (Te) and Iodine (I)
Sodium (Na) and Potassium (K)
Calcium (Ca) and Magnesium (Mg)
Iron (Fe) and Cobalt (Co)
Which of the following properties did Mendeleev primarily use to predict the properties of undiscovered elements?
Number of valence electrons
Atomic number
Properties of elements surrounding the gap
Radioactivity
Which of the following set of elements cannot be a triad
A) (7, 15, 31)
B) (40, 80, 120)
C) (14, 16, 18)
D) (19, 39, 59)
In Mendeleev's periodic table, elements in the same group had similar:
Atomic weights
Atomic numbers
Chemical properties
Number of neutrons
The statement that is true for the long form of the Periodic Table is
It reflects the order of decreasing atomic weights
It reflects the order of increasing atomic numbers
It reflects the order of increasing atomic radii
It reflects the order of increasing ionization energy
Mendeleev predicted the existence of an element he called eka-aluminum. Which of the following properties was NOT a prediction Mendeleev made about eka-aluminum?
The atomic weight of the element
The density of the element
The melting point of the element
The existence of several isotopes of the element
According to the Periodic Law of elements, the variation in properties of elements is related to their
Atomic Numbers
Atomic Masses
Number of Neutrons
Number of Isotopes
Mendeleev arranged the elements in his periodic table based primarily on:
Atomic number
Number of neutrons
Atomic weight
Number of valence electrons
