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प्रश्न
An element has 2 electrons in its N shell.
State its position in periodic table.
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उत्तर
Electronic configuration of the element is:
| K | L | M | N |
| 2 | 8 | 8 | 2 |
∴ Position in the periodic table is the 4th period. (Four shells).
संबंधित प्रश्न
How were the positions of cobalt and nickel resolved in the modern periodic table?
Name the scientist who prepared modern periodic table.
The three elements having chemical symbols of Si, B and Ge are:
(a) all metals
(b) all non-metals
(c) all metalloids
(d) Si is metalloid, B is metal and Ge is non-metal
Name two elements in Alkaline earth metals.
The modern periodic table shows the molecular masses of the elements in each frame.
Arrange the following elements in the increasing order of their metallic character
| Mg, | Ca, | K, | Ge, | Ga |
The maximum number of electrons that can be accommodated in s, p,d, and f subshells are ______.
Give the criteria on the basis of which elements are placed (i) in a group and (ii) in a period in the modern periodic table. The atomic number of an element is 16. According to the criteria, in which group and period it should be placed?
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 ______.
An element has 2 electrons in its N shell.
Is it a metal or a non-metal?
