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How can you tell whether or not an element will react with others element?
Depending on how many valence electrons in the element has, The other element could take away a valence electron to make eight
What is the symbol for one element that DOES NOT need eight electrons to have full set of valence electrons?
An element that does not require eight electrons for a full set of valence electrons is represented by the element symbol B. Boron only needs six electrons to complete its valence shell and achieve stability.
How can you tell whether or not an element will react other elements?
Depending on how many valence electrons in the element has, The other element could take away a valence electron to make eight
Which elements is less reactive an element whose atoms have seven valence electrons or an element whose atoms have eight valence electrons?
the element with seven valence electrons will be more reactive. The reason for this is that elements want to always want to have a full valence shell (they always want 8, like a noble gas). The element with eight valence electron is happy with its full shell and will not want to get rid of any electrons.
What is a representative element with eight electrons in its valence shells is called?
Octet
What contains eight elements?
Element 1 is hydrogen; element 8 is oxygen. Thus water, H2O, is such a substance. Another less familiar one is hydrogen peroxide, H2O2.
Are having eight valence electrons makes atoms very reactive?
No, eight valence electrons completely fills the valence band and makes the atom inert. The most reactive atoms have either one valence electron or seven valence electrons.
What element has the fewest valence electrons in period two?
In period two of the periodic table, lithium (Li) has the fewest valence electrons, with only one valence electron. This is characteristic of alkali metals, which are found in group one. As you move across the period, elements gain additional valence electrons, with neon (Ne) having eight.
Why does neon Ne rarely form compounds with other element?
Neon is unreactive because its valence shell is completely filled with eight electrons. Atoms undergo chemical reactions and form compounds in order to fill their outermost (valence) energy shell with eight electrons (two for helium, lithium, and beryllium). Having a filled valence shell makes an atom stable.
How does an atom of a representative element achieve its most stable state?
The valence shell must be completed to eight electrons.
Why do atoms with a weak electronegativity like lithium have a weak attractive force for electrons?
they have few valence electrons and aren't close to having eight valence electrons
How is the reactivity of a element releated to the outer shell?
The outer, or valence shell of electrons is closely related to an element's reactivity. First of all, the valence electrons are the only part of an atom that participate in a chemical reaction. The closer an atom's number of valence electrons is to eight (remember the octet rule), the more reactive it typically is. Elements with only 1 valence electron* (group 1) and elements with 7 valence electrons (group 17) are the most reactive. *Remember, having only 1 valence electron means once you lose it, you now have 8 electrons that were in the shell below it.*
