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प्रश्न
State the group and period, of the element having three shells with three electrons in valence shell.
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उत्तर
If there are three shells, the element belongs to the third period. An element with three valence electrons belongs to the 13 group.
संबंधित प्रश्न
Nitrogen (atomic number 7) and phosphorus (atomic number 15) belong to group 15 of the Periodic Table. Write the electronic configuration of these two elements. Which of these will be more electronegative? Why?
where should hydrogen be placed in the modern periodic table? Give reason for your answer.
What is the fundamental difference in the electron configurations between the group 1 and group 2 elements?
In what respects do the properties of group 1 elements differ from those of group 17 elements? Explain with examples by taking one element from each group.
State the modern periodic law for classification of elements. How many (i) groups and (ii) periods are there in the modern periodic table?
How will the tendency to gain electrons change as we go from left to right across a period? Why?
An element A has 2 electrons in its fourth shell. State its electronic configuration.
State what is meant by the term chemical formula.
Give the chemical formula of sodium hydroxide
An element belonging to 3d series of modern periodic table has spin magnetic moment = 5.92 B.M. in +3 oxidation state. The atomic number of elements are ______.
