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प्रश्न
An element A has 2 electrons in its fourth shell. State:
its valency
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उत्तर
Its valency is 2.
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संबंधित प्रश्न
Which element has a total of three shells, with four electrons in its valence shell?
Fill in the blank in the following statement:
The tendency to gain an electron ............... on moving down in a group of the periodic table.
For each of the following triads, name the element with the characteristics specified below:
| Elements | Least atomic radius | Chemically least reactive |
| (i) F, Cl, Br (ii) Li, Na, K |
.................... .................... |
.................... .................... |
Correct the statements.
Elements in the same periods have equal valency.
An element X belong to 4th period and 17th group, state.
name the family to which it belong.
Why fluorine has higher E.N. than chorine?
Name the element in period 3 which does not form oxide.
The following questions refer to the Periodic Table.
Name the first and last element in period 2.
Arrange the following as per instruction given in the bracket.
K, Pb, Ca, Zn (increasing reactivity)
State the following:
The group which contains highly electropositive metals including sodium.
