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The most reactive elements require to lose or gain the least number electron(s) to attain a noble gas structure. These are elements in group one as they need to lose one electron, and elements in group seven as they need to gain one electron.
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∙ 9y ago
The most reactive elements have one or seven valence electrons. Group 1 elements like the alkali metals have one valence electron, while group 17 elements like the halogens have seven valence electrons. Having a low or high number of valence electrons makes these elements highly reactive.
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∙ 11y ago1 or 7
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∙ 9y agolarger numbers
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∙ 8y ago8 electrons
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The Halogen family elements have how many valence electrons?
The halogen family elements have 7 valence electrons. This is because they have 7 electrons in their outermost energy level.
How many valence electrons do alkaline earth metals have?
The alkali earth elements have TWO valence electrons.
How many valence electrons can an atom have?
An atom can have a maximum of 8 valence electrons, except for hydrogen and helium, which can have a maximum of 2 valence electrons. Valence electrons are the electrons in the outermost energy level of an atom.
How many valence electron does calcium have?
Calcium has 2 valence electrons, like all Group 2 elements.
How many electrons are in the valence shell of all column 1 elements?
All column 1 elements have 1 electron in their valence shell.
How many valence electrons do transitions elements have?
How many valence electrons do transition elements have?
What happens to the reactivity of metals from left to right across the perriodic table?
Elements become less reactive as you move from left to right across the periodic table. This is due to how many valence electrons (outer-most electrons) the element has; the less valence electrons, the more reactive the element.
The Halogen family elements have how many valence electrons?
The halogen family elements have 7 valence electrons. This is because they have 7 electrons in their outermost energy level.
How many valence electrons are in the dot structure or the elements in 3A?
Elements in group 3A (also known as group 13) have 3 valence electrons in their dot structures. These elements include boron, aluminum, gallium, indium, and thallium.
How many valence electrons do elements group 17 have?
There are 7 valence electrons in elements of group-17. They are called halogens.
How many valence electrons does an element in group 4 have are they reactive?
All elements in group four have FOUR valence electrons. This is easy to remember because the group number located at the top of the periodic table of elements corresponds precisely in all cases to the experimentally observed number of valence electrons in the elements. It is also important to know that the elements in group eight (the inert gases) all have eight valence electrons, meaning that they can neither gain or lose electrons in the way of bonding with other elements, thus the maximum number of valence electrons any molecule can have is eight.
How many valence electrons do alkaline earth metals have?
The alkali earth elements have TWO valence electrons.
How many valence electrons can an atom have?
An atom can have a maximum of 8 valence electrons, except for hydrogen and helium, which can have a maximum of 2 valence electrons. Valence electrons are the electrons in the outermost energy level of an atom.
How many valence electrons do each what elements have boron gold krypton and calcium?
Gold has 25 valence electrons
How many electrons are in the valence shell of all column 1 elements?
All column 1 elements have 1 electron in their valence shell.
How many valence electrons do alkali metal family members have?
The key to this answer is the phrase "valence electrons". Alkali metals are in the first column of the periodic table and include elements such as Lithium, Sodium and Potassium. These elements typically lose ONE electron when they participate in a chemical reaction, therefore they have ONE valence electron.
How many valence electrons do halogens gave?
Halides have 7 valence electrons, but the halide ion, haven gained an electron has 8 valence electrons
