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What has the smallest atomic radius out of hydrogen sodium and lithium?
Helium has the smallest atomic radius out of hydrogen, sodium, and lithium. This is because helium has a full electron shell, leading to a smaller effective nuclear charge that pulls the electrons closer to the nucleus, resulting in a smaller atomic radius.
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).
Hydrogen lithium and sodium all have one valence electron Which element has the smallest atomic radius?
Among hydrogen, lithium, and sodium, hydrogen has the smallest atomic radius because it has the fewest number of electron shells and the smallest number of electrons, leading to a smaller atomic size.
What is the shortest atomic radius of an element?
Helium usually is listed with the smallest atomic radius when calculated. Hydrogen however has a smaller van der Waals radius
What halogen is most likely to react?
The reactivity of halogens decreases down the group, which means Fluorine is the most reactive halogens as it is the most electronegative elements among the halogens, and also the Periodic Table.
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?
Helium has the smallest atomic size among elements in the first four periods of the periodic table. It has the smallest atomic radius due to its high effective nuclear charge and low electron-electron repulsion.
What is the reactivity for the halogens?
The reactivity of halogens decreases with increasing atomic number.
Which halogen has the smallest radius?
Fluorine has the smallest atomic radius among the halogens. This is due to the increase in effective nuclear charge which pulls the electrons closer to the nucleus, resulting in a smaller atomic radius.
What makes chlorine the strongest oxidizing agent among the halogens?
Chlorine is the strongest oxidizing agent among the halogens because it has the highest electronegativity and the smallest atomic radius, allowing it to attract and gain electrons more easily, making it more reactive in chemical reactions.
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 are the names and atomic numbers of the halogens?
Fluorine = 9 Chlorine = 17 Bromine = 35 Iodine = 53 Astatine = 85
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.
Which alkali earth metal has the smallest atomic radius?
The alkali earth metal with the smallest atomic radius would be beryllium(Be), number four
What is the difference between the atomic number and the valence number of an atom?
Describe the reactivity of halogens
What elements has the smallest atomic radius bromine sulfur chlorine or selenium?
Among bromine, sulfur, chlorine, and selenium, chlorine has the smallest atomic radius. This is because atomic radius decreases as you move from left to right across a period on the periodic table. Chlorine is located on the right side of the periodic table in the 17th group, which indicates smaller atomic radius.
