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प्रश्न
Fluorine, chlorine and Bromine are put in one group on the basis of their similar properties.
What are those similar properties?
उत्तर
In a particular group, electrons in the outermost orbit remain the same.
Fluorine, Chlorine and Bromine all have 7 electrons in their outermost orbit, showing similar properties. These properties are:
- They form acidic oxides.
- They form hydrides with hydrogen.
- They form negative ions.
- They dissolve quite effectively in CS2, alcohol, and chloroform but only slightly in water.
- They are coloured and non-metals.
- Their B.P. and M.P. rise as they move down in the group.
- Due to their high reactivity, they are usually found in a combined state.
- They are good oxidising agents.
संबंधित प्रश्न
If an element is in Group 17, it is likely to be ______ (metallic/non-metallic) in character, while with one electron in its outermost energy level (shell), then it is likely to be ______ (metallic/non-metallic).
Write the name and symbol of the element from the description.
The most reactive nonmetal.
Write the name from the description.
The family of nonmetals having valency one.
Which of the following properties do not match with elements of the halogen family?
What is the name given to group 17 elements? Why are they called so?
Cl : halogen group : : Ar : _______
All the elements in the halogen family are gases.
The number of electrons in the valence shell of a halogen is ______.
An element X belongs to the 3rd period and 17th group, write the formula of the compound formed when X reacts with \[\ce{_13^27Y}\].
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?
