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Which Lewis dot diagram shows an atom that needs 2 or more electrons in its outermost shell?
Wiki User
∙ 6y ago
It is oxygen group elements
Wiki User
∙ 13y ago
Wiki User
∙ 12y agoOxygen
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How many valence electrons does heluim need to have a filled outermost energy level?
Helium only needs 2 valence electrons to have a filled outermost energy level.
How many electrons does neutral selenium atom need to fill outermost shell?
Selenium needs two more electrons.
How many electrons does carbon need to have the outermost energy shell filled?
Carbon needs to have 8 electron in its outermost shell to have it completely filled, 4 more valence electrons than it has in the neutral for of carbon.
Why are the alkali metals and the hologens very reactive?
Alkali metals have only 1 electron in their outermost (ultimate) shell. This means the atom needs energy to loose only one electron to have a completely filled outermost shell. Other atoms with 2 or 3 electrons would have needed more than twice or thrice the energy than these to loose electrons. Hence alkali metals are highly reactive compared to others. Like alkali metals, who need to LOOSE 1 electron to have a completely filled outermost shell, halogens need to GAIN 1 electron to have a completely filled outermost shell. With the same theory mentioned above, they are highly reactive.
What kind of bond forms O2?
An oxygen atom is located in the 16th period of the periodic table so its outermost level of electrons(level 2) contains 6 electrons which is two less then eight. So, in order for oxygen to fill its outermost level it needs to gain two electrons, or in this case, form a covalent bond with another oxygen atoms this is why an oxygen atom has a subscript of 2.
How many valence electrons does heluim need to have a filled outermost energy level?
Helium only needs 2 valence electrons to have a filled outermost energy level.
How many electrons are in the outermost energy level of carbon and how many does it need to have this energy level filled?
Carbon has four electrons in the outermost energy level, which is energy level two. It needs eight electrons to have this energy level filled.
How many electrons does neutral selenium atom need to fill outermost shell?
Selenium needs two more electrons.
How many electrons are in the outermost level of carbon how many electron does it need to have fill this energy level?
Carbon has four electrons in the outermost energy level, which is energy level two. It needs eight electrons to have this energy level filled.
How many electrons does carbon need to have the outermost energy shell filled?
Carbon needs to have 8 electron in its outermost shell to have it completely filled, 4 more valence electrons than it has in the neutral for of carbon.
Will an element that needs to gain or lose just one or two electrons in order to have a full outermost shell be highly reactive?
yes
Can oxygen accept and donate electrons?
Under normal conditions of temperature and pressure, oxygen gains electrons. The outermost orbital in an oxygen atom has four electrons., i.e., the outermost orbit has six electrons. Hence, to reach the octet configuration, oxygen can take two more electrons. Thus, oxygen is electronegative.
How many electrons does fluorine have on its outer most shell?
It is in Group 7 on the Periodic table which means it already has 7in its outer shell. The shell needs 8 to be complete so fluorine requires 1 more electron which it gains through ionic or covalent bonding.
Is the krypton element stable or unstable?
no it is not stable bcoz if an atom needs to be stable it needs to have 8 electrons in the valency (outermost) shell,where as a krypton has only 2 in its valency electron.
How many electrons does an atom of oxygen need in order to complete it's outermost energy level?
Two. Oxygen as the electronic configuration of 1s2, 2s2 2p4 and needs 2 electrons to achieve te "octet" of neon.
How many electrons does metal have in its outermost energy?
In order to determine the number of electrons in the outer orbit/ valence electrons of a metal, first the total number of electrons needs to be determined. This is done by deriving the atomic number from a periodic table. Arrange these in the shell format of 2, 8, 18, 32... The number of electrons in the outermost shell are the valence electrons
What is the number that represents the combining ability of an atom?
By combining ability do you ability to bond with other atoms? If so, you want to examine the number of electrons in the atoms outermost shell. NA has 1 electron in its outermost shell so it needs 7 more to fulfill the octet rule. It would bond with an atom like Cl.
