The periodic table is one of the most important tools in the history of chemistry. It describes the atomic properties of every known chemical element in a concise format, including the atomic number, atomic mass and relationships between the elements. Elements with similar chemical properties are arranged in columns in the periodic table.
The table thus is a quick reference as to what elements may behave the same chemically or which may have similar weights or atomic structures.
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Because potassium is a gas that can evolve
Answer:
The most stable resonance structure shown in fig (II).
Explanation:
Given that,
If oxygen is the central atom in the CON– ion
We know that,
Resonance :
The movement of electron is called resonance.
If the electronegativity is more of element then the element is more stable.
We need to find the most stable resonance structure
According to figure,
Electronegativity of N is more than C
So, N is the more stable in fig (II).
Hence, The most stable resonance structure shown in fig (II).