short note on structure of modern periodic table
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Features of a modern periodic table:
This table has 18 vertical columns called groups and 7 horizontal rows known as periods
.A few important features of the elements present in groups are as follows:
1. The groups are not divided into subgroups.
2. The elements present in a group have the same number of valence or similar electrons.
3. The elements present in a group have the same valency.
4. The number of shells increases as we go down the group.
5. The elements present in a group have identical chemical properties
.6. The physical properties of the elements such as melting point, boiling point, density in a group vary gradually
This table has 18 vertical columns called groups and 7 horizontal rows known as periods
.A few important features of the elements present in groups are as follows:
1. The groups are not divided into subgroups.
2. The elements present in a group have the same number of valence or similar electrons.
3. The elements present in a group have the same valency.
4. The number of shells increases as we go down the group.
5. The elements present in a group have identical chemical properties
.6. The physical properties of the elements such as melting point, boiling point, density in a group vary gradually
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