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JudyThe reactivity of Group 1 elements increases with increasing atomic number. This is due to the fact that as atomic number increases, the outermost electron is farther away from the nucleus, making it easier to lose and therefore more reactive. Additionally, the size of the atom increases down the group, leading to a weaker attraction between the outermost electron and the nucleus, further enhancing reactivity.
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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.
How does atomic mass indicated element reactivity?
Atomic mass does not directly indicate an element's reactivity. Reactivity is primarily determined by the number of electrons in the outer shell of an element (valence electrons). Elements with a full or nearly full outer shell (noble gases) are generally unreactive, while elements with few electrons in the outer shell (alkali metals) are highly reactive.
Why and how element are arranged in 4th period?
Increasing atomic number by 1
What is the relevance of increasing atomic numbers in the arrangement of elements?
Increasing atomic numbers in the arrangement of elements correspond to the number of protons in the nucleus, which determines the element's identity. This arrangement, known as the periodic table, groups elements with similar properties together. As atomic number increases across a period, the properties of elements change in a predictable manner, exhibiting trends in properties like reactivity, electronegativity, and atomic size.
What is meant the atomic number of an element?
The atomic number of an element is the number of protons found in the nucleus of an atom of that element. It uniquely defines an element and determines its chemical properties. Elements are arranged in order of increasing atomic number on the periodic table.
