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The alkali metals including Li, Na, K, Rb, Cs, Fr
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What are the examples of elements with predictable electron configurations?
All of the representative elements (s and p block) have predictable electron configurations. However, many of the transition elements have electron configurations that are not predicted by the rules for determining electron configuration.
What is s block element?
S block elements are elements that contain their outermost electron in the s shell. S block elements are further divided into 2 groups.
What is the number of valence electrons for the elements in group 1?
The elements in Group 1 have one valence electron in their outermost s orbital.
The most reactive elements have how many valence electrons?
The most reactive elements require to lose or gain the least number electron(s) to attain a noble gas structure. These are elements in group one as they need to lose one electron, and elements in group seven as they need to gain one electron.
How many orbitals are in a 1s sublevel?
Sub level is also called orbital.It does not have any degenerate orbital.
What are the examples of elements with predictable electron configurations?
All of the representative elements (s and p block) have predictable electron configurations. However, many of the transition elements have electron configurations that are not predicted by the rules for determining electron configuration.
What is s block element?
S block elements are elements that contain their outermost electron in the s shell. S block elements are further divided into 2 groups.
Why is the s-block called s-block?
The elements in the s-block have their last electrons in their electron configuration in the s-orbital.
Why the name s-block element?
S block elements are named so bcozIn this elements last electron enters the outermost s orbital(i.e. ns1 or ns2).
What is the number of valence electrons for the elements in group 1?
The elements in Group 1 have one valence electron in their outermost s orbital.
The most reactive elements have how many valence electrons?
The most reactive elements require to lose or gain the least number electron(s) to attain a noble gas structure. These are elements in group one as they need to lose one electron, and elements in group seven as they need to gain one electron.
How many orbitals are in a 1s sublevel?
Sub level is also called orbital.It does not have any degenerate orbital.
Which elements contains only one protron?
Only one element has single proton(proton is correct spelling). The element is Hydrogen. It has a single proton in it's nucleus and no neutrons. A single electron revolves around in s subshell of 1st energy shell( K shell). A Hydrogen atom which has lost it's electron can be said to be proton. No other element known has single proton in the nucleus (protons only reside in nucleus of atom) of it's atom.
What does it it mean to say that some elements are reactive and form ions easily whereas others do not?
Elements form ions by either gaining or losing valence electrons. The elements that lose electron(s) and gain electron(s) acquire a positive charge and negative charge respectively. The elements that lose and gain the least electrons require less ionization energy, and are more reactive than elements that need to lose or gain more electrons. For instance, elements in group 1 of the Periodic Table need to lose one electron, and are more reactive than elements in group 2 that need to lose 2 electrons.
Why are both hydrogen and cesium s-block elements?
They both have 1 outer electron which they would like to lose.
What is the element's symbol for atom?
A list of chemical elements and symbols is at this link.
How many elements does the s orbital have?
Orbitals don't contain elements. The elements each have specific orbitals based on the number of electrons it has. All of the elements have at least one s orbital. Hydrogen being the simplest element has one electron in the 1s orbital. The s orbital can contain a maximum of 2 electrons.
