Answer:Overview. Polymer chemists study large, complex molecules. They understand how the smaller building blocks (monomers) combine to form polymers, and they manipulate both their molecular structure and chemical or other processing to develop specific functional characteristics in an end product.
Explanation:
The hybridization for the Br in BrO4⁻ is 
. So, the correct option is (e).
In chemistry, the idea of combining atomic orbitals to create new hybrid orbitals (with different energies, shapes, etc., than the component atomic orbitals) is known as orbital hybridisation (or hybridization). These new hybrid orbitals are suitable for the pairing of electrons to form chemical bonds in valence bond theory.
Because more directional hybridised orbitals result in higher overlap when creating bonds, stronger bonds are formed, which favours the hybridization of orbitals. When hybridization takes place, this leads to more stable molecules.
One s orbital and three p orbitals combine to form four orbitals, each of which has a 25% s character and a 75% p character. This process is known as hybridization. Anytime an atom is surrounded by four groups of electrons, this kind of hybridization is necessary.
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Answer:
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Atomic mass of Li is the weighted average atomic mass with regard to their percentage abundance in nature
atomic mass of Li - mass of Li-6 x % of Li-6 + mass of Li-7 x % of Li-7
substituting these values in the formula
atomic mass of Li - 6.0151 x 7.42% + 7.0160 x 92.58 %
atomic mass of Li - 0.446 + 6.495 = 6.941
therefore atomic mass of Li is 6.941
