Fluorine, Chlorine and Bromine are put in one group on the basis of their similar properties.
What are those similar properties?
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Answers
Fluorine, Chlorine and Bromine are put in one group on the basis of their similar properties.
What are those similar properties?
Fluorine, chlorine and bromine are non-metals with seven valence electrons. They are highly electronegative elements with valency of one. They exist as diatomic molecules. They form ionic compounds with alkali metals .They are known as halogens. The term means salt forming and therefore compounds containing these elements are called salts.
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This is because:
They all have 7 Valence electrons.
- Fluorine has an atomic number 9
Electronic configuration → 2, 7
- Chlorine has an atomic number 17
Electronic configuration → 2, 8, 7
- Bromine has an atomic number 35
Electronic configuration → 2, 8, 18, 7
Similar properties include:
★ Fluorine, Chlorine and Bromine are all non metals.
★ As seen from the electronic configuration, all elements have 7 Electrons in their outermost shell. So, they have a valency of -1.
★ These elements are electro negative elements i.e. they can only accept electrons but cannot donate electrons.
KNOW MORE:
They are referred to as 'Halogens' because the word halo means salt in Greek and the elements in which these halogens are present are commonly called salts.