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प्रश्न
An element A has 2 electrons in its fourth shell. State:
is it an oxidising or reducing agent
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उत्तर
It is a Reducing agent.
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संबंधित प्रश्न
Taking the example of an element of atomic number 16, explain how the electronic configuration of the atom of an element relates to its position in the modern periodic table and how valency of an element is calculated on the basis of its atomic number.
Define the term : Valency
Write the number of horizontal rows in the modern periodic table. What are these rows called?
In the following set of element, one element does not belong to the set. Select this element and state why it does not belong:
Calcium, Magnesium, Sodium, Beryllium
Rewrite the following statement after correction, if necessary:
Elements in the same period have equal valency
Complete the following sentences
The similarities in the properties of a group of elements are because they have the same …………………
Chorine in the periodic table is surrounded by the elements with atomic number 9, 16, 18 and 35.
Which is more electronegative than chlorine?
The elements of one short period of the periodic table are given below in order from left to right:
| Li | Be | B | C | O | F | Ne |
One element of this period is missing. Which is the missing element and where should it be placed?
Select the correct answer from the options given below.
Is the group number of the element whose atomic number is 4.
Give a reason for the following:
A transition from metallic to non-metallic elements is seen on moving from left to right in a period of the periodic table.
