Table of Contents
- 1 How it can be proved that the basic structure of the modern?
- 2 How the electronic configuration of the atom of an element is related to its position in the modern periodic table explain with one example?
- 3 What is the basic structure of the periodic table?
- 4 How does Valency of an element vary across the group?
- 5 How does Valency of an element is related to its position in the periodic table?
- 6 Who arranged the periodic table?
- 7 What is the electronic configuration of an element?
- 8 How many marks are given for internal choice in CBSE Class 10 science?
How it can be proved that the basic structure of the modern?
The basic structure of the Modern Periodic Table is based on the electronic configuration of atoms of different elements consists of groups and periods, where the number of valence electrons determines the group and number of shells determines the period.
How it can be proved that the basic structure of the modern period table is based on the electronic configuration of atoms of different elements?
Similarly, if the electronic configuration of an element is 2, 8, 1, it means that the element belongs to group I and 3rd period (valence electron is present in the 3rd shell). Thus, the modern periodic table is based on the electronic configuration of the different elements.
The electronic configuration of an atom helps us to predict the position of the atom in the periodic table. (i) The number of the outermost shell corresponds to the period. For example, if the periodic table. (ii) The number of electrons in the outermost shell corresponds to group in the periodic table.
How does the electron configuration of an element give information about the period it is in?
the number of circles in the electronic configuration of an element is represented in the periodic table as the period number that element is situated in. the number of electrons in all shells of an element is represented in the periodic table as the element’s atomic number.
What is the basic structure of the periodic table?
The periodic table is a tabular array of the chemical elements organized by atomic number, from the element with the lowest atomic number, hydrogen, to the element with the highest atomic number, oganesson. The atomic number of an element is the number of protons in the nucleus of an atom of that element.
Where would you place an element F with electronic configuration 2 8 4 in the given table?
Explanation: Since the electronic configuration of given element is 2, 8, 4, it’s atomic number is 14 with having 4 valence electrons. Therefore, (a) It belongs to third period and fourth group of the Modern Periodic Table.
How does Valency of an element vary across the group?
Answer: The valency of an element is dependent on the number of electrons in the outermost shell of the electron. In a group all constituting elements will have the same valency because they all have the same number of electrons in the outer shells. Across the a period, the number however increase by 1.
What is the relation of electronic structure of an atom?
The position of an atom/element in the periodic table is related to the number of electrons in the outermost shell. In a given column or group, all elements have the same number of electrons in their outermost shells. For example, in group 2, all elements have two electrons in their outermost shell.
Explanation: The number of valence electrons an atom has determines its location in the period: the element with the electron configuration of [Ne]3s23p4 has six valence electrons, so within its period of 3 it must be a group 6 element: the element is therefore sulfur.
How do you arrange electron configurations?
The order for filling orbitals is as follows: 1s, 2s, 2p, 3s, 3p, 4s, 3d, 4p, 5s, 4d, 5p, 6s, 4f, 5d, 6p, 7s, 5f, 6d, 7p, 8s.
Who arranged the periodic table?
chemist Dmitri Mendeleev
In 1869, Russian chemist Dmitri Mendeleev created the framework that became the modern periodic table, leaving gaps for elements that were yet to be discovered. While arranging the elements according to their atomic weight, if he found that they did not fit into the group he would rearrange them.
What is the basic structure of the modern periodic table?
How it can be proved that the basic structure of the Modern Periodic Table is based on the electronic configuration of atoms of different elements. The electronic configuration of an element is 2, 8, 4. State its: (a) Group and period in the Modern Periodic Table. (b) Name and write its one physical property.
What is the electronic configuration of an element?
The electronic configuration of an element is 2, 8, 4. State its: (a) group and period in the Modern Periodic Table. (b) name and write its one physical property. [2] (a) Modern periodic law states that the physical and chemical properties of an element are the periodic function of the atomic number of that element.
Who gave the modern periodic table?
The modern periodic table was given by Henry Mosely. The modern periodic law states that “Periodicity of elements is a function of their atomic numbers.” Before the modern periodic law came it was believed that the periodicity of elements is a function of their atomic masses (Mendeleev’s periodic law).
How many marks are given for internal choice in CBSE Class 10 science?
Each question is a two marks question. These are to be answered in brief. Internal choice is given in sections B, C, D and E. Paper carried a total of 80 marks and additional 20 marks are kept for Internal Assessment. An Increase of about 33\% in Internal Choices was observed in CBSE Class 10 Science Question Paper 2019: