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As we move down the group of halogens the number of shells increase (as the number of periods are increased). Thus the halogens become less reactive. Halogens react by gaining an electron to have a complete outer shell (as they have seven). As the number of shells increase, the magnetic force from the nucleus (of the protons to the electrons) decrease thus make them less likely to gain an electron from other molecules. So the ones nearer to the bottom (e.g. iodine) will be less reactive than the one nearer to the top (e.g. chlorine).
What else can I help you with?
How does the reactivity of halogens change as you go down group 7?
As you go down group 7 (halogens), reactivity decreases. This is because as you move down the group, the outer electron shells of the halogens are further away from the nucleus, making it harder for them to gain an electron and react with other elements. Additionally, the atomic size increases which leads to weaker intermolecular forces between the atoms.
Do the halogens become more reactive or less reactive as they go lower down the group?
Halogens become less reactive as you go down the group. This is because atomic size increases down the group, making it more difficult for the larger atoms to gain electrons and react with other substances. Conversely, smaller halogen atoms are more reactive because they can more easily gain electrons and form bonds with other elements.
What is the trend in melting points as you go down the group of halogens?
The trend in melting points as you go down the group of halogens is that they generally increase. This is due to the increasing number of electrons and atomic size which results in stronger van der Waals forces between the atoms, leading to higher melting points.
Is halogen an element belonging to group 17 of the periodic table?
halogens are the element placed in the 17th group of the period table. they have valency 1 and are the most reactive and the most electronegative elements.Halogens include flourine,chlorine,bromine,iodine and astatine (the radioactive element) their electronegativity decreases down the group. halogens are also called as salt forming elements.
What are the highly reactive members of group 17 in the periodic table?
The highly reactive members of group 17 in the periodic table are fluorine, chlorine, bromine, iodine, and astatine. They are known as the halogens and readily react with other elements to form compounds. Their reactivity decreases going down the group.
How does the reactivity of halogens change as you go down group 7?
As you go down group 7 (halogens), reactivity decreases. This is because as you move down the group, the outer electron shells of the halogens are further away from the nucleus, making it harder for them to gain an electron and react with other elements. Additionally, the atomic size increases which leads to weaker intermolecular forces between the atoms.
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.
What is the trend in density as you go down the group of halogens?
The density increase down.
Does halogens reactivity decreese as you mov down the group?
Nope.
What are the characteristics of group 8A?
Group 8A elements, also known as noble gases, are colorless, odorless, and tasteless gases. They have a full valence shell of electrons, making them stable and unreactive. Their boiling points and melting points increase as you move down the group.
Describe how the reactivity of Group 7 Halogens changes as you move down the column Explain why this happens?
The reactivity of Group 7 halogens decreases as you move down the column from fluorine to iodine. This is because atomic size increases down the group, leading to weaker intermolecular forces of attraction between atoms. As a result, it becomes harder for the halogens to gain an extra electron and they become less reactive.
Where is the halogen gases found on the periodic table?
The Halogens are from Florine and down. They are the group 17 elements.
How does chemical activity change in Group 7 and What is chlorine used for?
Chemical activity decreases down Group 7 (halogens) as atomic size increases. Chlorine, a Group 7 element, is used for water purification, manufacturing of plastics and pesticides, and in the production of bleach and disinfectants due to its strong oxidizing properties.
Do the halogens become more reactive or less reactive as they go lower down the group?
Halogens become less reactive as you go down the group. This is because atomic size increases down the group, making it more difficult for the larger atoms to gain electrons and react with other substances. Conversely, smaller halogen atoms are more reactive because they can more easily gain electrons and form bonds with other elements.
Why does reactivity of the halogens decrease down the group?
As it go down the group, the distance between the nucleus (+ve) and the last electron (-ve) becomes smaller No: BIGGER.Therefore the electrons are held in the atom very tightly more loosely by a strong weakening force from the nucleus.So, it is said as the reactivityDEcreases down the group of NON-metals which gain stronger their electrons andINcreases down the group of metals which loose those electrons.
What is the density trend in halogens as you go sown the group?
As you move down the group of halogens in the periodic table, the density generally increases. This trend is due to the larger atomic and molecular masses of the heavier halogens, which outweigh the increase in volume. For example, fluorine and chlorine are gases at room temperature, while bromine is a liquid and iodine is a solid, reflecting their increasing densities. Thus, the trend shows that as you descend the group, the halogens become denser.
Similar for all halogens?
All halogens are highly reactive non-metallic elements with similar chemical properties. They form diatomic molecules in their elemental state (F2, Cl2, Br2, I2) and have a tendency to gain one electron to achieve a full valence shell, resulting in a -1 oxidation state in their compounds. They exhibit increasing molecular size and decreasing reactivity down the group.
