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Q: What relationship can be seen in an element's placement within a group and its electron configuration?
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What is the relationship between the electron configuration of an element and the period in which that element appear in the periodic table?

Electron configuration is the arrangement of elements according to their increasing atomic numbers whiles period is the arrangement of elements according to the increasing number of valence electrons.


What is the electron configuration for sodium chloride?

Electron configuration is a term applied to chemical elements not to compounds.


Do Cl nd Ar have the same electron configuration?

No. No two elements have the same electron configuration.


Which of these elements is found in a family with the above electron configuration?

Every elements have the electrons of an atom distribution or a molecule in molecular orbitals and it is called electron configuration. The element that can be grouped in the family with above electron configuration is called antimony.


What group of elements have stable electron confoguration?

The group of elements that have a stable electron configuration are the noble gases.


Can you write the electron configuration and the noble gas electron configuration shorthand for any of the elements?

Yes it is possible to write the noble gas configuration of all elements, though it is not possible to list all of them here.


What elements has a ground-state electron configuration different from the predicted one?

There are many elements among the transitional elements which has the electron configuration differed than predicted. Such element with the lowest atomic number is chromium.


Why are no two emission spectra for different elements ever the same?

Because emission spectrum are the result of the electron configuration of the element and no two elements have exactly the same electron configuration.


What is the electronic configuration for H2O?

Electron configurations are only made for pure elements. The electron configuration for Hydrogen is 1s1. The electron configuration for Oxygen is 1s2 2s2 2p4


Which elements have electron configuration that end in ns2 np5?

halogens


Are some discrepancies in the electron configuration of some elements?

explain


What elements lack a noble gas electron configuration?

Only group 18 elements have noble gas configuration. All other elements lack a noble gas electronic configuration.