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प्रश्न
The following questions refer to the Periodic Table.
What is the common feature of the electronic configurations of the elements in group 7?
उत्तर
All elements in group 7 have same number of valence shell electrons.
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संबंधित प्रश्न
Fill in the blank in the following statement:
On going down in a group in the periodic table, the metallic character of elements ...............
In which part of a group would you separately expect the elements to have the largest atomic size?
Explain why, the properties of elements are repeated after 2, 8, 18 and 32 elements in the periodic table.
Why sodium element of group 1 and chlorine element of group 17 both have valency 1?
An element Z has atomic number 16. Answer the following
(a) State the period and group to which Z belongs
(b) Is Z a metal or a non-metal?
(c) State the formula between Z and hydrogen.
(d) what kind of a compund is this?
Choose the most appropriate answer from the following list of oxides which fit the description.
An amphoteric oxide: Al2O3 (shows both acidic and basic properties)
An element A has 2 electrons in its fourth shell. State:
is it a metal or non-metal
Answer the following question:
State the four blocks of the modern periodic table based on the electronic configuration of elements.
The electronic configuration of an element is 2, 8, 4. State it:
name and write its one physical property.
Name or state following with reference to the element of the first three periods of the periodic table.
The non-metallic element present in period 3 other than sulphur and chlorine.
