Answer the following. Choose from the provided choices. 1. A molecule has a molecular formula of A2X32-. Atom A can exist as a diatomic molecule, A2. Based on this information, how many valence electrons are present in atom X? A. 3; B. 4; C. 5; D. 6
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.
Answer the following. Choose from the provided choices.
1. A molecule has a molecular formula of A2X32-. Atom A can exist as a diatomic molecule, A2. Based on this information, how many valence electrons are present in atom X?
A. 3; B. 4; C. 5; D. 6
2.The intermolecular forces of attraction are easier to break than intermolecular forces of attraction because they have:
A. larger charges when molecules are farther from each other
B. larger charges when molecules are closer together
C. smaller charges when molecules are farther from each other
D. smaller charges when molecules are closer together
3. Van der Waals forces are predominantly responsible for the following processes, EXCEPT
A. miscibility of HCl
B. formation of carbonic acid
C. liquefaction of gases
D. preparation of NaCl solution
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