According to VSEPR theory, what causes water molecules to have a bent shape? A. the unusual location of the free electrons. . B. repulsive forces between specific lone pairs of electrons. . C. attraction between the fixed orbitals of the unshared pairs of oxygen electrons. . D. ionic attraction and repulsion
Answers
Answer: Out of all the options presented above the one that best represents what causes water molecules to have a bent shape according to VSEPR theory is answer choice B) repulsive forces between specific lone pairs of electrons. the bond angle in a water molecule is bent.
I hope it helps, Regards.
The correct answer is that is repulsive forces between specific lone pairs of electrons.
Further Explanation:
The total number of valence electrons of is calculated as,
Total valence electrons (TVE) = [(1) (Valence electrons of O) + (2) (Valence electrons of H)]
In , the total number of valence electrons is 8. Here, oxygen forms single bond with the hydrogen atom and therefore, 2 pair of electrons are used in the formation of two single bonds with hydrogen atom. Remaining 2 pair of electrons are used to complete the octet of oxygen atom. Therefore,
contains two bond pairs and two lone pairs (refer to the image attached).
According to the VSEPR theory, central atom oxygen has two bond pair with two lone pair, therefore, has an
arrangement. Therefore, these four pairs of electrons spread out as tetrahedral arrangement to minimize lone pair-lone pair and bond pair-bond pair repulsion. Since lone pairs are not considered in the shape of the molecule and therefore, the final shape of water molecule is bent-shape.
Learn more:
1. Molecular shape around the central atom in the amino acid glycine: brainly.com/question/4341225
2. Balanced chemical equation: brainly.com/question/1405182
Answer details:
Grade: Senior School
Subject: Chemistry
Chapter: Covalent bonding and molecular structure
Keywords: hybridization, water, geometry, sp3, steric number, 3, p orbital, s orbital, Lewis structure, hybridization of water, central atom, carbon, hydrogen, oxygen, shape, double bond, h2o.
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The amount by which a machine multiplies an effort force is called ____.a. efficiency factor b. fulcrum c. mechanical advantage d. resistance force
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A major disadvantage of a corporation is thea. difficulty in transferring ownership.b. limited life.c. difficulty in raising capital.d. double taxation of the corporation s income and of dividends paid to shareholders.
Answers
Answer: Option (c) is the correct answer.
Explanation:
According to Le Chatelier's principle, when a system is in equilibrium for a long time then it will change its concentration, temperature, volume or pressure to attain a new equilibrium that partly counteracts the applied change.
Since it is given that reaction is exothermic therefore, according to Le Chatelier's principle increase in temperature will be opposed so that reaction can proceed in the forward direction. Therefore, temperature has to be decreased to carry the reaction in forward direction.
Whereas pressure has to be increased so that reaction will shift to the forward side where there are less number of molecules.
Thus, we can conclude that to increase the yield of the products for the given reaction decrease the temperature and increase the pressure.
Answers
When something is oxidized, it loses electrons.
When something is reduced, it gains electrons.
So the correct statements would be the second to last and third to last statements
The correct statements are -
- An element has been oxidized when it has reacted with oxygen gas to produce a compound with the oxygen atom included in its formula,
- A compound has been reduced when it originally had an oxygen atom in its formula and lost it as a consequence of reacting with some other element or compound,
- An element has been oxidized when, as a consequence of a chemical reaction, it has lost electrons to produce the same element as a product with a more positive oxidation state and
- An element has been reduced when, as a consequence of chemical reaction, it has gained electrons to produce the same element as a product with a more negative oxidation state.
Oxidation state, also known as oxidation number, is a measure of the degree of oxidation or reduction of an atom within a compound or ion. It indicates the number of electrons that an atom has gained or lost, or the hypothetical charge that it would have if all the shared electrons in a compound were assigned to the more electronegative atom.
The oxidation state of an atom can be positive, negative, or zero. In a neutral molecule, the sum of the oxidation states of all the atoms must be zero. In ions or compounds, the sum of the oxidation states of all the atoms must be equal to the overall charge of the species.
Oxidation states are assigned based on a set of rules that consider the electronegativity of atoms, the number of valence electrons, and the distribution of electrons in a molecule or ion. The oxidation state provides information about the reactivity, bonding, and redox reactions of substances. It is often represented by Roman numerals or as a signed integer.
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Answer is: another name for groups of elements is family.
There are 18 numbered groups in the periodic table.
The elements in a group have similar physical or chemical characteristics and some groups have a specific name, for example group 17 (the halogens).
Elements in the group have the same number of valence electrons, for example, chemical elements in group 15 of the periodic table have neutral atom with a valence electron configuration of ns²np³.
Final answer:
In Chemistry, groups of elements are often referred to as families or groups.
Explanation:
In Chemistry, groups of elements are often referred to as families or groups. These groups are organized based on similar properties and characteristics. For example, the alkali metals (group 1) and the halogens (group 17) are two well-known families of elements.
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In an ionic compound, the smallest whole-number ratio of positive and negative ions that results in a neutral unit is called the formula unit.
What is ionic compound?
- The compound formed by the ionic bond is called ionic compound.
- The ionic compound is stronger than covalent compound.
- The ionic compound contains positive part called cation and negative part called an anion.
- Example: sodium chloride (
)
What is ionic bond?
- The bond formed by the complete transfer of electrons is called ionic bond.
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Answer:
It is called the formula unit
(2) NaOH(aq) + HCl(aq) -->NaCl(aq) + H2O(l) + heat
(3) H2O(l) + heat --> H2O(g)
(4) H2O(l) + HCl(g) -->H3O+(aq) + Cl-(aq) + heat
Answers
The equation where the term heat represents the heat of fusion is NaCl(s) + heat -->NaCl(l).
The heat of fusion is the heat required to break the intermolecular interactions in a solid as it is converted to the liquid. Hence, the process of fusion is the process of converting a solid into a liquid.
Examining the equations shown in the options closely, we will discover that in the equation; NaCl(s) + heat -->NaCl(l), heat is supplied to sodium chloride solid and it is converted to liquid. The heat involved in this process is the heat of fusion.
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Answer:
The answer is 1
Explanation:
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Answer:
Explanation: NO, because dental varnish interferes with the bonding and setting reaction of composite resins and glass ionomer restorations the use of varnish is contraindicated with these materials.