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प्रश्न
The given table shows elements with the same number of electrons in its valence shell.
| Elements | A | B | C |
| m.p. | 63.0 | 180.0 | 97.0 |
Whether these elements belong to same group or period.
उत्तर
Yes, these elements belong to the same group but are not from the same period as these elements have the same number of electrons in their valence shell.
संबंधित प्रश्न
Correct the statement.
Valency depends upon the number of shells in an atom.
The electronic configuration of an element T is 2, 8, 8, 1.
What is the valency of T?
Name the element which has a total of three shells with five electrons in its valence shell?
Name the element of period 3 with valency 4.
Explain why the following statement is not correct:
Atoms of elements in the same group have the same number of electron(s).
On moving down a group, the number of valence electrons ______.
Sodium and aluminum have atomic numbers 11 and 13, respectively. They are separated by one element in the periodic table and have valencies 1 and 3 respectively. Chlorine and potassium are also separated by one element in the periodic table (their atomic numbers being 17 and 19, respectively) and yet both have valency 1. Explain.
An element ‘A’ belongs to the third period and group 16 of the Periodic Table. Find out the valency of A.
Which one of the following elements exhibits a maximum number of valence electrons?
How does the number of valency vary on moving from left to right in the third period of the periodic table?
