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Explain why alkali metals have a greater affinity for electrons than alkaline earth metals?
They don't, they actually have a greater tendency to lose electrons.
This is for a number of reasons.
First of all, the alkali metals form a stable cation by losing one electron, while the alkaline-earth metals need to lose two to form a stable ion. It takes more energy to remove one electron from an atom than it does to remove two.
Additionally an alkaline earth metal has a greater positive charge on its nucleus and a smaller atomic radius than an alkali metal in the same row of the Periodic Table. This make it even harder to remove valence electrons.
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?? WRONG: Alkali metals have a valence electron configuration of ns1 so they can accept another electron in the ns orbital. On the other hand, alkaline earth metals have a valence electron configuration of ns2. Alkaline earth metals have little tendency to accept another electron, as it woudl have to go into a higher energy p orbital.
What else can I help you with?
Definition of electron affinity?
The energy change that occurs when an electron is added to a neutral atom. This is usually exothermic. Noble Gases are excluded from this. Equation: X(element)+e-(electron)---------> X-1+ energy
Why electron affinity value of IIA group less than those if IIA?
The electron affinity values of Group IIA (alkaline earth metals) are generally lower than those of Group IIA (halogens) due to their electron configurations. Group IIA elements have a filled s subshell, making it energetically unfavorable to gain an additional electron, as they prefer to lose electrons to achieve a stable noble gas configuration. In contrast, Group IIA elements have higher electron affinity values because they have a strong tendency to gain an electron to complete their p subshell, leading to greater stability. Thus, the difference in electron affinity reflects the distinct chemical behaviors and stability preferences of these groups.
Do transition have higher melting point than alkaline and alkali metals?
Yes, transition metals generally have higher melting points compared to alkaline and alkali metals. This is because transition metals have a greater number of valence electrons and a stronger metallic bond, which requires more energy to break and transition from solid to liquid. In contrast, alkaline and alkali metals have fewer valence electrons and weaker metallic bonds, resulting in lower melting points.
Which has a greater attraction for electrons Fluorine or Oxygen?
when compared to oxygen, fluorine has greater electronegativity (greater attraction for shared pair of electrons).
which element would have a greater affinity for an additional electron Be or O?
Last time i cheacked it could be Be
Which has a greater electron affinity fluorine or bromine?
Fluorine has greater electron affinity than bromine, or any other element.
How many time greater is the affinity of hemoglobin for carbon monoxide greater than the affinity of hemoglobin for oxygen?
The affinity of hemoglobin for CO is roughly 20,000 times greater than that of oxygen in vitro. In vivo, the affinity of hemoglobin for CO is roughly 200-225 greater than that of oxygen. ------------------------------------------------------------------------------------------------- O2 has stronger bond than CO. Therefore, the oxygen in CO loves the iron in the hemoglobin as iron ends with two electrons which complete the 6 electrons in the oxygen. In vivo, the affinity of hemglobin for CO is about 153 from 141x153/141. by amin elsersawi
What is the Significance of Rf value?
· Used in identification pusposes · Use to determine the affinity of the solute to the solvent - Greater Rf , greater affinity of solute to the solvent
Which one will get more electrons when two objects are rubbed together?
The object with a higher electron affinity will tend to gain more electrons when rubbed together with another object. This is because it has a greater ability to attract and hold onto electrons from the other object, resulting in a net transfer of electrons from one object to the other.
How do you make alkaline?
The concentration of dissociable OH- ions is a measure of the basicity of the substance. Greater the concentration of hydroxyl ions, greater is it alkaline.
Which pH would be alkaline?
A pH greater than 7 is considered alkaline.
How do transition metals compare to the reactivity of the alkalia or alkaline earth metals and why?
Transition metals generally have less reactivity than alkali or alkaline earth metals. This is because transition metals have more filled electron shells which provide greater stability, making it harder for them to lose or gain electrons compared to alkali or alkaline earth metals. Transition metals typically form compounds by sharing electrons or by forming complex ions, unlike alkali or alkaline earth metals that readily form simple ionic compounds by losing electrons.
Definition of electron affinity?
The energy change that occurs when an electron is added to a neutral atom. This is usually exothermic. Noble Gases are excluded from this. Equation: X(element)+e-(electron)---------> X-1+ energy
Why electron affinity value of IIA group less than those if IIA?
The electron affinity values of Group IIA (alkaline earth metals) are generally lower than those of Group IIA (halogens) due to their electron configurations. Group IIA elements have a filled s subshell, making it energetically unfavorable to gain an additional electron, as they prefer to lose electrons to achieve a stable noble gas configuration. In contrast, Group IIA elements have higher electron affinity values because they have a strong tendency to gain an electron to complete their p subshell, leading to greater stability. Thus, the difference in electron affinity reflects the distinct chemical behaviors and stability preferences of these groups.
Which has the lower electron affinity germanium or selenium?
Selenium has a lower electron affinity than germanium. Electron affinity is the energy released when an atom gains an electron to form a negative ion. In general, electron affinity tends to decrease as you move down a group in the periodic table, which is why selenium has a lower electron affinity than germanium.
Do transition have higher melting point than alkaline and alkali metals?
Yes, transition metals generally have higher melting points compared to alkaline and alkali metals. This is because transition metals have a greater number of valence electrons and a stronger metallic bond, which requires more energy to break and transition from solid to liquid. In contrast, alkaline and alkali metals have fewer valence electrons and weaker metallic bonds, resulting in lower melting points.
What is alkaline-?
Having the properties of being basic, with a pH greater than 7, and with the tendency to donate electrons or accept protons in chemical reactions. an improved form of dry cell using a base, or alkali, at the electrolyte
