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Helium has two valence electrons.
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Which element has highest valency?
8 which is a full outer electron shell. There are two exceptions: Helium(He) and Hydrogen(H) which can only have 2 electrons in their outer shell.
What is the valency of an element with example?
== == The valency of an element is the measure of electrons it needs or needs to loose to obtain a stable structure (a noble gas structure, such as helium, neon, argon ...) for example in NaCl, sodium has 11 electrons which means 1 valence electron, chlorine has 17 electrons which means it has -1 valence electrons; so sodium looses 1 electron and chlorine gains that electron so sodium ends up with 10 electrons (Neon's electron structure) and chlorine ends up with 18 electrons (Argon's electron structure) the number of outer electrons. Noble elements are the most stable elements (thats why they don't react well and stay alone, like helium) so all the other elements try to obtain the noble electron structure. Elements usually gain or loose 4 electrons.
How many electron orbitals does helium have?
How many atoms / electron clouds does helium have ?
As a helium filled balloon rises in the air it becomes?
Larger (the air pressure is dropping as it rises).
What is the valency and electronic configuration of oxygen?
Electron configuration for oxygen (O) is 1s2 2s2 2p4. The valency is 2-.
What is the valency of helium?
The valency of Helium is 0
What is the valency of helium be?
helium's valency is zero as id does not combine with other elements
What is the electron number for helium?
two
What is meant by valency orbit and valency electron?
A valance electron is one that is associated with an atom. The valence orbit is the one that electron travels in.
What is called valency of an electron?
In fact an electron has no valency, though it is equal to a -1 (minus one) charged anion like Cl-, having a valency of -1
How calculate valency?
Valency is calculated in this way... 1. Find atm no of that element. 2. Write down electronic configuration. 3. Take the valence shell electron number. 4. The number of electrons to be lost are added as the valency.
Which element has highest valency?
8 which is a full outer electron shell. There are two exceptions: Helium(He) and Hydrogen(H) which can only have 2 electrons in their outer shell.
What is the valency of hydrogen and why?
The valency of hydrogen is +1 because it has a tendency to lose an electron while combining with an Elelment. This gives it a positive valency.
How many electron orbitals does helium have?
How many atoms / electron clouds does helium have ?
What is the valency of an element with example?
== == The valency of an element is the measure of electrons it needs or needs to loose to obtain a stable structure (a noble gas structure, such as helium, neon, argon ...) for example in NaCl, sodium has 11 electrons which means 1 valence electron, chlorine has 17 electrons which means it has -1 valence electrons; so sodium looses 1 electron and chlorine gains that electron so sodium ends up with 10 electrons (Neon's electron structure) and chlorine ends up with 18 electrons (Argon's electron structure) the number of outer electrons. Noble elements are the most stable elements (thats why they don't react well and stay alone, like helium) so all the other elements try to obtain the noble electron structure. Elements usually gain or loose 4 electrons.
What atom contains 1 electron and 2 protons?
None, for it to be an atom it has the have the same number of electrons and protons. Something with 1 electron and 2 protons would theoretically be a helium ion but helium does not form ions.
What is the valency and electronic configuration of oxygen?
Electron configuration for oxygen (O) is 1s2 2s2 2p4. The valency is 2-.
