Which of the following values best classifies a bond between 2 atoms as being ionic?A. An electronegativity difference of greater than 1.7 between the atoms
B. An electronegativity difference of greater than 2.7 between the atoms
C. An electronegativity difference of less than 1.7 between the atoms
D. An electronegativity difference of less than 2.7 between the atoms
Answers
Answer is: A. An electronegativity difference of greater than 1.7 between the atoms.
Electronegativity (χ) is a chemical property that describes the tendency of an atom to attract a shared pair of electrons towards itself.
Atoms with higher electronegativity attracts more electrons towards it, electrons are closer to that atom.
For example, in ionic salt sodium fluoride (NaF), fluorine has electronegativity approximately χ = 4 and sodium χ = 1 (Δχ = 4 - 1; Δχ = 3), fluorine attracts electron and it has negative charge and sodium has positive charge.
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Electricity
Industry
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Answers
Answer:
Here's what I get
Explanation:
In double-displacement (metathesis) reactions, such as precipitation and acid-base reactions, the cations of two compounds exchange places; these reactions are not redox processes.
General Reaction: AB + CD → AD + CB
In solution, single-displacement reactions occur when an atom of one element displaces the atom of another. Since one of the reactants is an element, all single-displacement reactions are redox processes.
General Reaction: X + YZ → XY + Z
Answer :
In double-displacement (metathesis) reactions, such as precipitation and acid-base reactions, the cations of two reactants exchange places; these reactions are not redox processes.
In solution, single-displacement reactions occur when an atom of one element displaces the atom of another. Since one of the reactants is an element, all single-displacement reactions are redox processes.
Explanation :
Double-displacement reaction : It is defined as the reaction in which the cation of two reactants molecule exchange their places to give two different products.
The double-displacement reaction are not a redox reaction.
It is represented as :
Where A and C are the cations and B and D are the anions.
Single-displacement reaction : It is a type of reaction in which the more reactive metal displaces the least reactive metal from its solution.
It is represented as :
Where A is the most reactive metal and BC is the compound in which the B is the least reactive metal which is displaced by the most reactive metal A.
The single-displacement reaction are a redox reaction.
Answers
H = mCΔT
where H is the energy absorbed or released, m is the mass of the substance, C is the specific heat capacity, and ΔT is the change in temperature.
2208 J = 41 g x 4.18 J/g·°C x ( T - 24 °C)
T = 36.88 °C
c. Silverpoint
b. Ink painting
d. Liquid media
Answers
Answer : Option A) Dry media
Explanation : i) Dry media is a media that deposits graphite, charcoal, pastels, ordinary pencils, then moistened with a wet brush to get various painterly effects on the paper fibers.
ii) Silverpoint - Silverpoint media uses red chalk or traces of black pencil on white-coated paper usually the manuscripts,
iii) Ink Painting - Uses various inks on the paper.
iv) Liquid media - uses liquid pigments suspended in some base which in liquid state that soaks the paper.
c. Niels Bohr
b. Erwin Schrodinger
d. Ernest Rutherford
Answers
The quantum mechanical model of the atom was developed by Erwin Schrödinger. The correct option is B
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Austrian physicist Erwin Schrödinger created the quantum mechanical model of the atom in 1926. The development of quantum mechanics, a fundamental physics theory that describes how matter and energy behave at the atomic and subatomic scales, was significantly aided by Schrödinger's work.
The behavior of electrons in atoms was mathematically described by Schrödinger's wave equation, which combined wave-like and particle-like characteristics. His work transformed our understanding of the atomic universe and formed the basis for contemporary quantum theory, along with the contributions of other scientists like Werner Heisenberg and Max Planck.
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The answer is Erwin Schrodinger.