Identify the true statement(s) about the valence bond theory. 1. The strength of a bond depends on the amount of overlap between the two orbitals of the bonding atoms. 2. The greater the overlap between two bonding atoms, the lesser the bond strength. 3. Orbitals bond in the directions in which they protrude or point to obtain maximum overlap
Answers
Answer:
The strength of a bond depends on the amount of overlap between the two orbitals of the bonding atoms
Orbitals bond in the directions in which they protrude or point to obtain maximum overlap
Explanation:
The valence bond theory was proposed by Linus Pauling. Compounds are firmed by overlap of atomic orbitals to attain a favourable overlap integral. The better the overlap integral (extent of overlap) the better or stringer the covalent bond.
Orbitals overlap in directions which ensure a maximum overlap of atomic orbitals in the covalent bond.
Answer:
THE STRENGTH OF THE BOND DEPENDS ON THE AMOUNT OF OVERLAP BETWEEN THE TWO ORBITALS OF THE BONDING ATOMS
ORBITALS BOND IN THE DIRECTION OR POINT IN WHICH THEY PROTRUDE OR POINT TO OBTAIN MAXIMUM OVERLAP.
Explanation:
Valence bond theory describes the covalent bond as the overlap of half-filled atomic orbital yields a pair of electrons shared between the two bonded atoms. Overlapping of orbitals occurs when a portion of one orbital and the other occur in the same region of space. The strength of a bond is determined by the amount of overlap between the two orbitals of the bonding atoms. In other words, orbitals that overlap more and in the right orientation of maximum overlapping form stronger bonds that those with less overlap and right orientation for maximum overlap. The bonding occurs at a varying distance in different atoms from which it obtains its stable energy caused by the increase in the attraction of nuclei for the electrons.
Orbitals also bond in the direction to obtain maximum overlap as orientation of the atoms also affect overlap. The greater overlap occurs when atoms are oriented on a direct line mostly end to end or side by side between the two nuclei depending on the type of bond formed. A sigma bond is formed when atoms overlap end to end in which a straight line exists between the two atoms that is the internuclear axis indicating the concentrated energy density in that region. Pi bond exits in when overlap occurs in the side -to -side orientation and the energy density is concentrated opposite the internuclear axis.
Related Questions
Calculate the entropy change for the gas. (2b)Calculate the entropy change when 14 g of nitrogen expand from a volume of 10 L to a volume of 30 L at the same temperature. Assuming ideal behaviour for the nitrogen gas
What product would you expect from a nucleophilic substitution reaction of (S)-2-bromohexane with acetate ion, CH3CO22? Assume that inversion of configuration occurs, and show the stereochemistry of both the reactant and product.
What rules can you use to tell how many protons, neutrons and electrons make up an atom or ion?
PLEASE HELP IMMEDIATELY
One mole of carbon would contain 6.02 x 1023 carbon atoms, but one mole of chlorine would contain 6.02 x 1023 diatomic chlorine molecules.
For ionic compounds, the representative particle is the formula unit of the compound (eg. NaCl).
One mole of water (H2O) contains 6.02 x 1023 atoms.
Avogadro's number is the number of discrete, representative units found in one mole of a substance.
Answers
Answer:
Option C
Explanation:
Avogadro number represent discrete unit of a substance which can be atom, molecule, ion etc.
In one mole of H2O there will be 6.02 x 1023 molecules and not atoms.
Molecule of H2O is the discrete unit of water mole and not atom.
Hence, option C is correct choice of answer
Answers
Answer:
Its arrangement.
Explanation:
Hello,
In this case, we rewrite the chemical reaction as:
Now, a more organized dimensional analysis is shown below to determine the very same required value:
Without giving the numerical answer, one sees that the student's dimensional analysis is wrongly written as long as the 3 moles of must be dividing rather than multiplying as it is the relationship factor used to relate it with the
based on the reaction stoichiometry. Moreover, the 6.7moles of
must be multiplying as it is the starting value.
Best regards.
Answer:
The error is in the rule of three.
3 mol of Ba(OH)2 ___ comes from ____ 1 mol Ba3N2
6.7 mol of Ba(OH)2 ___ comes from ___ (6.7 .1) / 3
Explanation:
Ba3N2 + 6H2O → 3Ba(OH)2 + 2NH3
3 mol of Ba(OH)2 x 1 mol of Ba3N2 / 6.7 mol of Ba(OH)2
- The rule of three is wrong.
- The chemical equation is ballanced.
- The question is not clear about which is the limiting reactant. May be we don't have enough water, so that's the limiting and Ba3N2 is in excess. So have to work with H2O.
Answers
Answer:
65 mg
Explanation:
We are given the dosage per pound but have the weight of the dog in kilograms, thus we should convert the 29.5 kg to punds ( 1 pound = 0.454 kg):
29.5 kg x 1 lb / 0.454 kg = 64.7 lbs
So now can answer our question:
( 1 mg / lb ) x 64.7 lb = 64.7
rounding to 65 mg
Final answer:
To treat itchy skin in a dog that weighs 29.5 kg, the dog should be given 65 mg of Benadryl.
Explanation:
To calculate the mass of Benadryl to give to a dog that weighs 29.5 kg, we need to use the recommended dosage of 1 mg per pound. First, we convert the weight of the dog from kg to pounds by multiplying it by 2.2046. So, the weight of the dog is approximately 65 pounds. To find the mass of Benadryl, we multiply the weight of the dog in pounds by the recommended dosage. Therefore, the dog should be given 65 mg of Benadryl.
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Answers
Final answer:
The electron pair geometry of a phosphine, PH3, molecule is tetrahedral, though the molecule itself takes on a trigonal pyramidal shape due to the presence of a lone pair of electrons on the phosphorus atom.
Explanation:
The electron pair geometry for a phosphine molecule, PH3, is tetrahedral. In PH3, the phosphorus atom is the central atom surrounded by three hydrogen atoms. However, it is important to note that the phosphorus atom also has a lone pair of electrons. The lone pair occupies more space than bonding pairs, causing the molecule to take on a trigonal pyramidal molecular geometry. Despite the molecular geometry, the electron pair geometry is considered tetrahedral because it accounts for all regions of electron density, including lone pairs.
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Final answer:
The electron pair geometry for a phosphine molecule (PH3) is tetrahedral. This refers to the spatial arrangement of regions of electron density around the central atom, phosphorus, which is bonded to three hydrogen atoms and has one lone pair of electrons.
Explanation:
The electron pair geometry for a phosphine molecule, PH3, is best described as tetrahedral. Even though the PH3 molecule is not tetrahedral, the electron pair geometry refers to the spatial arrangement of regions of electron density around the central atom, in this case, phosphorus. Phosphorus in the PH3 molecule is bonded to three hydrogen atoms and has one lone pair of electrons. These four regions of electron density adopt a tetrahedral arrangement to minimize electron-electron repulsion. Please note that the molecular structure of PH3 is trigonal pyramidal as lone pairs are not included while determining the molecular geometry.
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Answers
Answers
Answer:
nitrogen 18
nitrogen has an atomic number of 7