Question
Asked Nov 8, 2019
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Which of the following places the following elements in the correct order from greatest to lowest first ionization energy?

Na, K, Li, Cs, Rb

Select one:
a. Cs > Rb > Li > K > Na
b. Cs > Rb > K > Na > LI
c. Li > Na > K > Cs > Rb
d. Cs > Rb > K > Li . Na
e. Li > Na > K > Rb > Cs
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Expert Answer

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Step 1

An atom is composed of three main sub-atomic particles; electrons, neutrons and protons. The atomic number of the elements represents the number of protons or electrons in a neutral atom. All known elements are arranged in a tabular form in increasing order of their atomic number that is called as the periodic table. 

Step 2

The distribution of electrons in an atom can be shown with the help of electronic configuration. The electronic configuration of an element represents the number of electrons in different energy levels of an element. 

Step 3

In the periodic table down in the group the atomic radii increases as the number of valence shell increases in atom, whereas ...

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Science

Chemistry

Atomic structure

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