Beryllium and Calcium. These elements show chemical reactions similar to magnesium because magnesium, calcium and beryllium belong to same group, i.e. Group 2nd in the Modern Periodic Table.
Beryllium and Calcium. These elements show chemical reactions similar to magnesium because magnesium, calcium and beryllium belong to same group, i.e. Group 2nd in the Modern Periodic Table.
Various anomalies of Mendeleev’s Periodic Table removed as follows in the Modern Periodic Table: (i) Elements are arranged in the increasing order of their atomic number in Modern Periodic Table, thus there was no need for keeping more than one element in one slot. (ii) In Modern Periodic Table therRead more
Various anomalies of Mendeleev’s Periodic Table removed as follows in the Modern Periodic Table:
(i) Elements are arranged in the increasing order of their atomic number in Modern Periodic Table, thus there was no need for keeping more than one element in one slot.
(ii) In Modern Periodic Table there was no problem of the place of isotopes, as isotopes have same atomic mass with different atomic numbers.
(iii) Elements having same valence electron are kept in same group.
(iv) Elements having same number of shells were put under the same period.
(v) Position of hydrogen became clarified in as it is kept in the group with the elements of same valence electrons.
Since, noble gases are inert and all of them show similar properties, thus they have unique properties compare to other elements, thus they are placed in a separate group in Periodic Table.
Since, noble gases are inert and all of them show similar properties, thus they have unique properties compare to other elements, thus they are placed in a separate group in Periodic Table.
Mendeleev used atomic mass of the elements as the unique criteria of the elements. He proposed that the chemical properties of elements are the periodic function of their atomic masses. And thus, he arranged the elements in the increasing order of their atomic masses.
Mendeleev used atomic mass of the elements as the unique criteria of the elements. He proposed that the chemical properties of elements are the periodic function of their atomic masses. And thus, he arranged the elements in the increasing order of their atomic masses.
Name two elements you would expect to show chemical reactions similar to magnesium. What is the basis for your choice?
Beryllium and Calcium. These elements show chemical reactions similar to magnesium because magnesium, calcium and beryllium belong to same group, i.e. Group 2nd in the Modern Periodic Table.
Beryllium and Calcium. These elements show chemical reactions similar to magnesium because magnesium, calcium and beryllium belong to same group, i.e. Group 2nd in the Modern Periodic Table.
See lessHow could the Modern Periodic Table remove various anomalies of Mendeléev’s Periodic Table?
Various anomalies of Mendeleev’s Periodic Table removed as follows in the Modern Periodic Table: (i) Elements are arranged in the increasing order of their atomic number in Modern Periodic Table, thus there was no need for keeping more than one element in one slot. (ii) In Modern Periodic Table therRead more
Various anomalies of Mendeleev’s Periodic Table removed as follows in the Modern Periodic Table:
See less(i) Elements are arranged in the increasing order of their atomic number in Modern Periodic Table, thus there was no need for keeping more than one element in one slot.
(ii) In Modern Periodic Table there was no problem of the place of isotopes, as isotopes have same atomic mass with different atomic numbers.
(iii) Elements having same valence electron are kept in same group.
(iv) Elements having same number of shells were put under the same period.
(v) Position of hydrogen became clarified in as it is kept in the group with the elements of same valence electrons.
Why do you think the noble gases are placed in a separate group?
Since, noble gases are inert and all of them show similar properties, thus they have unique properties compare to other elements, thus they are placed in a separate group in Periodic Table.
Since, noble gases are inert and all of them show similar properties, thus they have unique properties compare to other elements, thus they are placed in a separate group in Periodic Table.
See lessWhat were the criteria used by Mendeleev in creating his Periodic Table?
Mendeleev used atomic mass of the elements as the unique criteria of the elements. He proposed that the chemical properties of elements are the periodic function of their atomic masses. And thus, he arranged the elements in the increasing order of their atomic masses.
Mendeleev used atomic mass of the elements as the unique criteria of the elements. He proposed that the chemical properties of elements are the periodic function of their atomic masses. And thus, he arranged the elements in the increasing order of their atomic masses.
See lessBesides gallium, which other elements have since been discovered that were left by Mendeleev in his Periodic Table? (any two)
Scandium and Germanium
Scandium and Germanium
See less