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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
How does the chemical reactivity of:
halogens vary?
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.
If an element is in Group 17 [or Group 7A] is it likely to be metallic or non- metallic in character?
Cl : halogen group : : Ar : _______
Iodine : solid : : bromine : _______
Write the name.
A halogen from period 4.
Identify the following:
A reaction in which the hydrogen of an alkane is replaced by a halogen.
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?
