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प्रश्न
This question refers to the elements of the periodic table with atomic numbers from 3 to 18. Some of the elements are shown by letters, but the letters are not the usual symbols of the elements.
| 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| A | B | C | D | E | F | G | H |
| 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 |
| I | J | K | L | M | N | O | P |
Which of these is a halogen?
उत्तर
G (9) and O (17)
संबंधित प्रश्न
Write the name from the description.
The family of nonmetals having valency one.
The halogen which is liquid at room temperature is ..................
Which of the following properties do not match with elements of the halogen family?
Arrange the following:
Elements of group 17, in decreasing order of reactivity
Cl : halogen group : : Ar : _______
Write the name.
A halogen from period 4.
The number of electrons in the valence shell of a halogen is ______.
Fluorine, chlorine and Bromine are put in one group on the basis of their similar properties.
What are those similar properties?
An element X belongs to 3rd period and 17th group, state the no. of valence electrons in it.
Fluorine, chlorine and Bromine are put in one group on the basis of their similar properties.
What is the common name of this group or family?
