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These elements are Nobel Gases in group 18.
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∙ 14y ago
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What is the general valence shell configuration for the elements in group 7A?
Valence electron configuration in group 7A (halogens): ns2, np5 in which n=2, 3, 4, 5, ... etc. Starting with fluorine, F, electron configuration: (1s2), 2s2 2p5 (non valence electrons in () brackets)
Why are group A elements called Representative elements?
They follow a pattern for valence electrons.
What atoms have a full set of electrons in the outer level?
Noble gases, or elements of the 18th group have full valence shells. In other words helium, neon, argon, krypton, xenon, radon and ununoctium have full valence shells.
Why don't elements in group 18 usually form chemical bonds?
group 18 elements are what we call noble gasses. This means that their most outer shell called the valence shell has all 8 electrons. The reason why other elements are reactive is because all elements want to have a full valence shell because it makes them more stable. The noble gasses have a full shell so they are not very reactive.
Why are group 17 elements highly reactive while group 18 are virtually unreactive?
Group 18 elements are called the noble gases because they do not want to react with anything. This is because they have a full shell of valence electrons. This means they have 8 valence electrons and with a full shell they are very stable elements. Group 17 elements have valence 7 electrons in their outer shell and this is very unstable because each element on the periodic table is trying to get to the most stable form. This means they all want to get their electron configurations to look the same as noble gas that is closest to them. Group 18 elements only need one more electron to be like the noble gases so they will want to react more so that they can gain that one extra electron.
What group of elements already has a full shell?
Noble gases already has full valence shell
What is the general valence shell configuration for the elements in group 7A?
Valence electron configuration in group 7A (halogens): ns2, np5 in which n=2, 3, 4, 5, ... etc. Starting with fluorine, F, electron configuration: (1s2), 2s2 2p5 (non valence electrons in () brackets)
Why are group A elements called Representative elements?
They follow a pattern for valence electrons.
What is the number of the family group with atoms that all ready have full valence shells?
The family is Group-18. They are noble elements.
What are the valence electron of an atom?
The valence electrons are found on the valence shell, the outermost shell of an atom. By using the periodic table and the group numbers, one can find the number of valence electrons for elements in groups (vertical columns) 1-2 and 13-18. For the 1st 2 groups (1 and 2), the group number tells the number of valence electrons for elements which belong in that group Elements in the 1st group have 1 valence electron and elements in the 2nd group have 2 valence electrons. For groups 13-18, refer to the tens' value (the teen value that is not the "1" in these cases). Elements in group 13 have 3 valence electrons, elements in group 14 have 4 and so on to the the final group, 18, where electrons have a full octet of valence electrons.
Which group in the PTOE contains elements that hardly react?
Group 18, the noble gases, are elements that hardly react with other elements. This is because they have their full complement of eight valence electrons.
What atoms have a full set of electrons in the outer level?
Noble gases, or elements of the 18th group have full valence shells. In other words helium, neon, argon, krypton, xenon, radon and ununoctium have full valence shells.
Which group or family is virtually unreactive?
In general, it is the Group 18 elements, which are the inert or noble gases, that do not want to react with other elements. You'll recall that helium, neon, argon, krypton, xenon and radon are the inert gases, and each one of them has a full outer (valence) electron shell. The fact that the valence shells of these elements are full will cause them to generally be unreactive.
What is the last group in the periodic table called?
There are no 'rows' on the Periodic Table of the Elements.I assume you are talking about Group-18 of the table.Group-18 of the Periodic Table of the Elements are the noble gases. These elements have a full valence shell (8 electrons).
Why don't elements in group 18 usually form chemical bonds?
group 18 elements are what we call noble gasses. This means that their most outer shell called the valence shell has all 8 electrons. The reason why other elements are reactive is because all elements want to have a full valence shell because it makes them more stable. The noble gasses have a full shell so they are not very reactive.
What is special about a full valence shell?
the elements having full valence shell donot react as they are inert in nature.
Why zero group elements are mono atomic?
Atoms of these elements do not combine with other atoms, even atoms of the same element, because their valence electron shells are full.
