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प्रश्न
Name the element which is in seventeenth group and second period.
उत्तर
Fluorine (F) is the element which is in the seventeenth group and the second period.
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संबंधित प्रश्न
Calcium is an element with atomic number 20. Stating reason, answer each of the following questions:-
(i) Is calcium a metal or a non-metal?
(ii) Will its atomic radius be larger or smaller than that of potassium with atomic number 19?
(iii) Write the formula of its oxide.
Write any one difference in the electronic configurations of group-1 and group-2 elements ?
Which element has twice as many electrons in its second shell as in its first shell?
What happens to the metallic character of the elements as we move from left to right in a period of the periodic table?
Which one of the following does not increase while moving down the group of the periodic table?
An element A has atomic number 14. To which period does this element belong and how many elements are there in this period.
Complete the following sentences
The similarities in the properties of a group of elements are because they have the same …………………
Name the element in period 3 which does not form oxide.
Name or state following with reference to the element of the first three periods of the periodic table.
A non-metal in period 2 having electronic configuration 2, 6.
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.
