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प्रश्न
Name the element which has a total of three shells with five electrons in its valence shell?
उत्तर
Phosphorus (P)
संबंधित 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.
An element barium has atomic number 56. Look up its position in the periodic table and answer the following question.
What is its valency?
The electronic configuration of an element T is 2, 8, 8, 1.
How many valence electrons are there in an atom of T?
Write scientific reason.
Elements belonging to the same group have the same valency.
The metals of Group 2 from top to bottom are Be, Mg, Ca, Sr and Ba. State the common feature in the electronic configuration.
The valence shell of element A contains 3 electrons while the valence shell of element B contains 6 electrons. If A combines with B, the probable chemical formula of the compound is ______
Arrange the following as per the instruction given in the bracket:
P, Si, F, Be (decreasing order of valence electrons)
An element has 2 electrons in its N shell.
What is the valency of this element?
Match the atomic number with the following:
A gaseous element with valency 2.
How does the number of valency vary on moving from left to right in the third period of the periodic table?
