
The atomic number of a halogen element in the fourth period is if true enter , else enter
Answer
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Hint: The elements, which are positioned on the left of the nobles gases on the periodic table are named as the halogens. They belong to . The elements present in this group are non-metallic.
Complete step by step answer: We know that in the periodic table, the Group-17 belongs to the halogens family. The halogen family is seen before the noble gases. The number of valence electrons is seven, and it needs only one extra electron to complete the octet. Due to this reason, halogens are more reactive than other groups consisting of the non-metals. The oxidation state of halogen is
The elements present in the halogen family is,
- Fluorine
- Chlorine
- Bromine
- Iodine
- Astatine
Fluorine belongs to second period and has atomic number
Chlorine belongs to third period and has atomic number
Bromine belongs to fourth period and has atomic number
Iodine belongs to fifth period and has atomic number
Astatine belongs to sixth period and has atomic number
From the above list of halogens along with their atomic number, we can see the atomic number of a halogen element in the fourth period is
Thus, the given statement is true and therefore, enters
Note:
- Halogen has the capability to form diatomic molecules in their elemental state.
- Halogens could be hydrogen halides and hydrogen oxoacids.
- Halogen exhibit a oxidation state of
- Bromine is liquid at room temperature, whereas fluorine and chlorine are gases at room temperature.
- Iodine and astatine are solids at room temperature.
- Fluorine is highly electronegative and astatine is least electronegative.
Complete step by step answer: We know that in the periodic table, the Group-17 belongs to the halogens family. The halogen family is seen before the noble gases. The number of valence electrons is seven, and it needs only one extra electron to complete the octet. Due to this reason, halogens are more reactive than other groups consisting of the non-metals. The oxidation state of halogen is
The elements present in the halogen family is,
- Fluorine
- Chlorine
- Bromine
- Iodine
- Astatine
Fluorine belongs to second period and has atomic number
Chlorine belongs to third period and has atomic number
Bromine belongs to fourth period and has atomic number
Iodine belongs to fifth period and has atomic number
Astatine belongs to sixth period and has atomic number
From the above list of halogens along with their atomic number, we can see the atomic number of a halogen element in the fourth period is
Thus, the given statement is true and therefore, enters
Note:
- Halogen has the capability to form diatomic molecules in their elemental state.
- Halogens could be hydrogen halides and hydrogen oxoacids.
- Halogen exhibit a oxidation state of
- Bromine is liquid at room temperature, whereas fluorine and chlorine are gases at room temperature.
- Iodine and astatine are solids at room temperature.
- Fluorine is highly electronegative and astatine is least electronegative.
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