40. Identify the element that has the following electron configuration a. 1s 2s°2p° 3s 3p® 4s 3d0 4p b. 1s 2s'2p 3s 3p$ 4s 3d0 4p3 c. 1s 2s 2p 3s 3p® 4s 3d0 4p d. 1s 2s 2p° 3s 3p° 4s 3d10 4p° 5s 4d0 5p 6s 4f4 5d0 6p 7s' e. 1s 2s 2p 3s 3p 4s 3d0 4p 5s24 d0 5p 6s 4f4 5d0 6p 7s 5f14 6d® f. 1s 2s 2p 3s 3p° 4s 3d10 4p 5s 4d10 5p° 6s? 4f0 g. 1s 2s 2p° 3s'3p° 4s 3d0 4p 5s 4d 5p 6s? 4f'4 5d10 6p h. 1s 2s 2p 3s 3p° 4s 3d i. 1s 2s 2p° 3s3p° 4s 3d0 4p° 5s 4d10 5p? j. [Kr] 5s 4d0 5p
Formal Charges
Formal charges have an important role in organic chemistry since this concept helps us to know whether an atom in a molecule is neutral/bears a positive or negative charge. Even if some molecules are neutral, the atoms within that molecule need not be neutral atoms.
Polarity Of Water
In simple chemical terms, polarity refers to the separation of charges in a chemical species leading into formation of two polar ends which are positively charged end and negatively charged end. Polarity in any molecule occurs due to the differences in the electronegativities of the bonded atoms. Water, as we all know has two hydrogen atoms bonded to an oxygen atom. As oxygen is more electronegative than hydrogen thus, there exists polarity in the bonds which is why water is known as a polar solvent.
Valence Bond Theory Vbt
Valence bond theory (VBT) in simple terms explains how individual atomic orbitals with an unpaired electron each, come close to each other and overlap to form a molecular orbital giving a covalent bond. It gives a quantum mechanical approach to the formation of covalent bonds with the help of wavefunctions using attractive and repulsive energies when two atoms are brought from infinity to their internuclear distance.
![onfigurations
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40. Identify the element that has the following electron configuration
a. 1s 2s 2p° 3s 3p° 4s² 3d10 4p
b. 1s 2s 2p 3s 3p 4s2 3d10 4p
c. 1s 2s 2p° 3s 3p® 4s 3d0 4p°
d. 1s 2s 2p° 3s 3p° 4s 3d10 4p° 5s 4d10 5p° 6s 4f4 5d0 6p° 7s'
e. 1s? 2s 2p° 3s²3p® 4s? 3d0 4p 5s24 d10 5p° 6s? 4f14 5d10 6p 7s? 5f\4 6d®
f. 1s 2s 2p° 3s 3p° 4s 3d0 4p 5s? 4d10 5p° 6s? 4f10
g. 1s 2s 2p° 3s'3p° 4s 3d0 4p 5s 4d0 5p° 6s 4f4 5d10 6p
h. 1s 2s 2p® 3s 3p° 4s 3d
i. 1s 2s°2p° 3s'3p 4s 3d0 4p° 5s² 4d10 5p?
j. [Kr] 5s 4d0 5p
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