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प्रश्न
An element X belongs to 3rd period and 17th group, state the no. of valence electrons in it.
उत्तर
7 valence electrons (2, 8, 7)
संबंधित प्रश्न
Write the name and symbol of the element from the description.
The most electronegative atom.
Write the name from the description.
The family of nonmetals having valency one.
What is the name given to group 17 elements? Why are they called so?
Cl : halogen group : : Ar : _______
Iodine : solid : : bromine : _______
All the elements in the halogen family are gases.
Identify the following:
A reaction in which the hydrogen of an alkane is replaced by a halogen.
The number of electrons in the valence shell of a halogen is ______.
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?
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?
