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प्रश्न
What is the name given to group 17 elements? Why are they called so?
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उत्तर
Group 17 elements are called halogens. The name halogens are from Greek halo (sea salt) and gens (producing, forming) and thus means 'sea salt former'.
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संबंधित प्रश्न
How does the chemical reactivity of:
halogens vary?
Write the name and symbol of the element from the description.
The most reactive nonmetal.
The halogen which is liquid at room temperature is ..................
Find the correlation:
Cl : halogen group : : Ar : _______
Complete the correlation:
Group 1 : Alkali metals : : ______ : Halogens.
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 ______.
An element X belongs to 3rd period and 17th group, state the no. of valence electrons in it.
An element X belongs to the 3rd period and 17th group, state the name of the family to which it belongs.
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?
