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The halogens are located on the left of the noble gases on the Periodic Table. These five toxic, non-metallic elements make up Group 17 of the periodic table and consist of: fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and astatine (At).

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Why do halogens have the smallest atomic radii in their respective periods?

Halogens have the smallest atomic radii in their respective periods because they have the highest effective nuclear charge due to their high electronegativity. This strong pull on the electrons results in a smaller atomic radius compared to other elements in the same period. Additionally, the addition of electrons to the same energy level does not shield the nuclear charge effectively, further decreasing the atomic radius.


In the future a new halogen may be synthesized. Predict its atomic number and properties?

It is difficult to predict the specific atomic number of a hypothetical new halogen. Generally, halogens are known for their high reactivity, tendency to form salts, and distinctive coloration in various compounds. The new halogen may exhibit similar properties to the existing halogens, such as fluorine, chlorine, bromine, iodine, and astatine.


What element has the lower atomic number of any group?

Lithium is the element with the lowest atomic number in Group 1 (alkali metals), while hydrogen is the element with the lowest atomic number in Group 17 (halogens) and Group 18 (noble gases).


This element has an atomic number that is double the atomic number of silicon?

this elemnt has an atomic number that is double the atomic number of silicon?


This element has the atomic number that is double the atomic number of silicon?

The element with an atomic number that is double the atomic number of silicon is germanium, with an atomic number of 32. Silicon has an atomic number of 14.

Related Questions

What is the reactivity for the halogens?

The reactivity of halogens decreases with increasing atomic number.


What are the names and atomic numbers of the halogens?

Fluorine = 9 Chlorine = 17 Bromine = 35 Iodine = 53 Astatine = 85


What trends the periodic table should be expected as the atomic number decreases in the halogens?

Halogens with lower atomic number are more reactive and less dense. Also iodine is solid, bromine liquid and the first halogens are gases.


What is the difference between the atomic number and the valence number of an atom?

Describe the reactivity of halogens


What is the difference between the atomic number of an element and the number of valence electrons?

Describe the reactivity of halogens


What is the difference between the atomic number of an element and number of valence electrons?

Describe the reactivity of halogens


If an element of atomic number 118 is ever synthesized what properties might you expect it to have?

noble halogens


What are the halogens from the lowest to highest atomic number?

Fluorine, chlorine, bromine, iodine, astatine (ununseptium?)


What is the relation between the halogens and their atomic numbers?

The halogens are a group of elements in the periodic table that includes fluorine, chlorine, bromine, iodine, and astatine. They are located in Group 17, and their atomic numbers increase across the period from fluorine (atomic number 9) to astatine (atomic number 85). This means that each halogen element in this group has one more proton in its nucleus compared to the previous element, resulting in an increase in atomic number.


What period is bromine in on the periodic table?

Bromine is on the 17th column of the periodic table.It has atomic number of 35.


Where is iodine located in the periodic table?

Iodine is located in the 17th group, also known as Group 7 or the halogens, of the periodic table. It has the atomic number 53.


What is the gas with a mass number of nineteen?

The atomic mass 19 is for fluorine, the ist member of halogens it exists as F2,a diatomic gas.