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Question
Modern periodic law states that the physical and chemical properties of elements are the periodic functions of their ______.
Options
atomic numbers
atomic masses
similarities
anomalies
Solution
Modern periodic law states that the physical and chemical properties of elements are the periodic functions of their atomic numbers.
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RELATED QUESTIONS
The atomic number of an element is more important to the chemist than its relative atomic mass. Why?
Complete the table:
|
Atomic number |
Element |
Electronic configuration |
Select an element of the same group |
|
11 |
Sodium |
|
(Ca/N/K)… |
|
15 |
Phosphorus |
|
(Ba/N/Rb)… |
|
16 |
Sulphur |
|
(F/Cl/O)… |
|
9 |
Fluorine |
|
(Ca/Cl/K)… |
Relative atomic mass of a light element up to calcium is approximately ______ its atomic number.
An element A has 2 electrons in its fourth shell. State:
its atomic number
What is meant by ‘period number’. What does it signify?
Give a reason for the following:
Properties of elements are periodic functions of their atomic numbers and not atomic weights.
State whether true or false. If false, correct the statement.
Newlands’ periodic table is based on atomic masses of elements and modern periodic table is based on atomic number of elements.
State modern periodic law.
The basis of modern periodic law is ______.
| Group in the modern periodic table | Families |
| 1 | ______ |
| ______ | Transition metals |
| ______ | Boron family |
| 15 | ______ |
| 17 | ______ |
