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Answered 2011-08-25 15:23:07
Nonmetals usually have 4-8 valence electrons.
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How many valence electrons do all nonmetals have?
There is no set amount of valence electrons for nonmetals. The amount of valence electrons a nonmetal has is determined by the number of electrons on the outer shell of the atom.
Can nonmetals gain electrons to fill their valence shells?
Yes, nonmetals generally gain electrons to fill valence shells.
The valence electrons found in metals are different from nonmetals because?
metals can conduct electricity, the valence electrons of nonmetals cannot roam freely
How many valence electrons can atoms of nonmetals have?
always more than 4
What happens when nonmetals bond with nonmetals?
when nonmetals bond with nonmetals they form covalent bonds by sharing their valence electrons
What will a non-metal do with its valence electrons?
Nonmetals attract electrons.
What is the relationship between the number of valence electrons and reactivity?
The more to the right of the periodic table the more reactive Only for nonmetals, for metals the most reactive are to the left and have 1 valence electron. Nonmetals have many, 6 or 7, valence electrons that make them very reactive.
What group is mostly nonmetals and has 7 valence electrons?
Halogens.
Why does the number of valence electrons in metals tend to be less than in nonmetals?
Metals tend to be on the left of the transition elements and therefore they have less valence electrons in their outer shell. Nonmetals are on the the right of the transition metals and those nonmetals almost have in their electron outer shell full and the number they have in the outer shell represents the valence electrons.
Describe 2 ways that nonmetals can combine with other elements?
Nonmetals become stable by gaining or sharing enough valence electrons to have a set of eight valence electrons in a shell or energy level
What are the period 2 nonmetals with 6 valence electrons?
Oxygen is the only nonmetal with 6 Valence Electrons in period 2.
Compared with nonmetals the number of valence electrons in metals are generally what?
smaller
Do nonmetals share valence electrons?
Yes, they share them in a covalent bond.
Is the number of valence electrons in metals greater or smaller compared to nonmetals?
No
Why do metals form cations lose electrons and nonmetals form anions gain electrons?
Metals transfer their electrons to nonmetals in order to reach the "octet" or 8 electrons in the valence shell.
What ions are formed in nonmetals?
nonmetals form negative ions (i.e. O^-2) by gaining valence electrons metals form positive ions (i.e. K^+1) by losing valence electrons
What happens to the electrons with the nonmetals in groups 6a and 7a of the periodic table?
The nonmetals in Group 6A will gain two electrons because they have 6 electrons in their valence shell. The nonmetals in Group 7 will gain one electron.
Which type of element is most likely to gain electrons when it bonds?
Nonmetals because they have a lot of valence electrons.
What term describes the most reactive nonmetals that have seven valence electrons?
halogens
What time describes the most reactive nonmetals that have seven valence electrons?
Halogens
What is a Nonmetals with seven valence electrons?
Halogens such as chlorine, flourine, bromine, iodine
Do nonmetals gain electrons in chemical reactions?
during a chemical reaction valence electrons are most always transferred
Do nonmetals have valence electrons?
Yes, usually from 4 to 8 depending upon the element.
What term describes the reactive nonmetals that have seven valence electrons?
alkali earth metals
How many valence electrons are there in NO3?
How many valence electrons are there in NO3-?
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