It will take 8 electrons in its valence shell.
This non-metal usually forms 2 covalent bonds. This leads me to believe that it has 6 valence electrons, to begin with, and will take 2 more, one from each bond. Such that it ends with a full valence shell of 8 electrons.
In covalent bonds, non-metals share electrons to attain full valence shells.
Most of the non-metals have 4 to 7 electrons in their valence shells. Formation of ions: Non-metals tend to accept electrons in their valence shell to form negatively charged ions called anions.
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In covalent bonds, non-metals share electrons to attain full valence shells.
This non-metal usually forms 2 covalent bonds. This leads me to believe that it has 6 valence electrons to begin with and will take 2 more, one from each bonds. Such that it ends with a full valence shell of 8 electrons.
Which of the following is a correct equilibrium expression?
A.
`"K"_("eq") = (["KOH"]^4["O"_2]^3)/(["KO"_2]^4["H"_2"O"]^2)`
B.
`"K"_("eq") = (["H"_2"O"]^2)/(["O"_2]^3)`
C.
`"K"_("eq") = (["KO"_2]^4["H"_2"O"]^2)/(["KOH"]^4["O"_2]^3)`
D.
`"K"_("eq") = (["O"_2]^3)/(["H"_2"O"]^2)`
Answer:
Answer is option D
Explanation:
The explanation is embedded in the word document attached
Answer:
Keq= [KOH]^4 [O2]^3/[[KO2]^4
Explanation:
4KO2(s) + 2H2O(l) → 4KOH(s) + 3O2(g)
Looking at the equation, the correct equilibrium expression is shown in the answer. The equilibrium constant for a reaction is given by the active masses of species involved in the reaction. The relative molar coefficients of species are raised to the power of their molar concentrations to give the active mass of each specie. This active mass now goes into the equilibrium equation.
Water is not included in the equilibrium equation because, as a solvent, it is present in large excess.
Hydroxide Ions
Acid and Bases are defined according to three different theories and concepts.
A) Arrhenius Concept
B) Lowry Bronsted Theory
C) Lewis Theory
According to Arrhenius Concept of Acid and Base, "Acid is any specie which when dissolved in water ionizes to produce H⁺ ions".
Examples:
HNO₃ → H⁺ + NO₃⁻
H₃PO₄ → 3 H⁺ + PO₄³⁻
While, "Bases are those species which when dissolved in water produces Hydroxyl Ions (OH⁻)".
Examples:
KOH → K⁺ + OH⁻
Ca(OH)₂ → Ca²⁺ + 2 OH⁻
When an Arrhenius base dissolves in water, it yields hydroxide ions (OH-).
When an Arrhenius base is dissolved in water, it yields hydroxide ions, which have a chemical formula of OH-. The formula for an Arrhenius base is usually represented as BOH, where B represents a cation (positive ion) and OH- represents the hydroxide ion. Some examples of Arrhenius bases include sodium hydroxide (NaOH) and potassium hydroxide (KOH).
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The chemicals responsible for the red flame have been strontium, the green flame has been produced by barium, and sodium has been responsible for the yellow flame.
Aerial fireworks are produced by chemical change. The fireworks have been composed of gun powder and chemicals which provide color to the reaction. The gun powder has been composed of Potassium nitrate, copper, and sulfur. The combustion reaction takes place with gunpowder and heat energy. The reaction results in the explosion of the fireworks.
The fireworks have been produced in varying colors due to the chemicals present in them. The chemical change for the transition from one substance to another and results in the colorful lights.
The chemicals responsible for the red flame have been strontium, the green flame has been produced by barium, and sodium has been responsible for the yellow flame.
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Strontium or Lithium compounds produce red color, Barium compounds produce green color, and Sodium compounds produce yellow color in aerial fireworks.
The elements responsible for producing red, green, and yellow colors in aerial fireworks are:
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(3) Two electrons are transferred.
(4) Four electrons are transferred.
Answer:The correct answer is option (2).
Explanation:
A covalent bond is defined as sharing of the electrons between two atoms with less or zero difference in their electronegativites.
A multiple covalent bonds are those bond where more than one bond is present. Like double or triple bonds.
In double covalent bonds there are 4 electrons are shared.
in triple covalent bonds there are 6 electrons are shared.
Single covalent bond is formed by sharing of two electrons while multiple covalent bond is formed when 4 electrons are shared, thus the correct option is 2.
Covalent bond is defined as a type of bond which is formed by the mutual sharing of electrons to form electron pairs between the two atoms.These electron pairs are called as bonding pairs or shared pair of electrons.
Due to the sharing of valence electrons , the atoms are able to achieve a stable electronic configuration . Covalent bonding involves many types of interactions like σ bonding,π bonding ,metal-to-metal bonding ,etc.
Single covalent bond is formed when 2 electrons are shared while multiple covalent bond is formed when 4 electrons are shared, thus the correct option is 2.
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Answer:
The Atmosphere Is a separate layer And Also could be classified as the Closest layer
Explanation: