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Why do halogens have the smallest atomic radii in their respective periods?
Wiki User
∙ 11y ago
Halogens have maximum effective nuclear charge. So the high number of protons in the nucleus attract electrons and thus the size of the atomic radii is the smallest.
Wiki User
∙ 11y ago
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What has the smallest atomic radius out of hydrogen sodium and lithium?
Hydrogen has the smallest atomic radius - 25 pm.
What is halogens atomic number?
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).
What is the valency for iodine?
Iodine's atomic number is 53. That puts it in the halogen group. All halogens have 7 valence electrons.
Group containing iodine and chlorine?
Iodine and chlorine are group 17 elements. They are called halogens and all lack one electron of having an electron configuration that mimics that of an inert or noble gas. That makes them very reactive. A link is provided to the Wikipedia article on the halogens.
What is the atomic number for air?
Air is not an element. So it doesn't have an atomic no.It is a mixture of the following gases which have their respective atomic no. given by their side.Nitrogen-7Oxygen-8Carbon dioxide-gas made from carbon-6 and oxygen-8Argon-18
What happens to the reactivity of halogens as you go down the group?
the reactivity of halogens goes on decreasing as we go down the group, because of increasing in atomic size of the respective element.
Which element has the smallest atomic size from first 4 periods?
Hydrogen.
What is the relationship between halogen and a noble gas?
atomic number fall into groups and periods....groups two of which are halogens and noble gases... means halogens and noble gases are related to each other by groups... hope i helped...
What is the reactivity for the halogens?
The reactivity of halogens decreases with increasing atomic number.
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 has the smallest atomic radius out of hydrogen sodium and lithium?
Hydrogen has the smallest atomic radius - 25 pm.
What elements has the smallest atomic radius bromine sulfur chlorine or selenium?
Chlorine will have the smallest atomic radius, bromine the largest.
What has the smallest atomic number?
Hydrogen is a gas element. It had the smallest atomic number.
Why does argon have the smallest atomic radius in period 3?
Argon doesnt have the smallest atomic radius, its chlorine.Argon has the largest atomic radius in period 3.
What is the relation between the halogens and their atomic numbers?
The atomic number of a halogen or any other element is the number of protons in the nuclei of their atoms.
What is the difference between the atomic number and the valence number of an atom?
Describe the reactivity of halogens
What has a strong hold on electrons?
An atomic nucleus has a stong hold on an electron.
