acetone and ethanol Choose one or more: A. London dispersion B. dipole–dipole C. hydrogen bonding D. ion-induced dipole
1 answer:
Explanation:
The weak intermolecular forces which can arise either between nucleus and electrons or between electron-electron are known as dispersion forces. These forces are also known as London dispersion forces and these are temporary in nature.
Dipole-dipole interactions are defined as the interactions that occur when partial positive charge on an atom is attracted by partial negative charge on another atom.
When a polar molecules produces a dipole on a non-polar molecule through distribution of electrons then it is known as dipole-induced forces.
Hydrogen bonding is defined as a bonding which exists between a hydrogen atom and an electronegative atom like O, N and F.
Chemical formula of acetone is . Due to the presence of oxygen atom there will be partial positive charge on carbon and a partial negative charge on oxygen atom. Hence, dipole-dipole forces will exist in a molecule of acetone.
Whereas hydrogen bonding will exist in a molecule of ethanol (). Since, hydrogen atom is attached with electronegative oxygen atom.
Whereas London dispersion forces will also exist in both acetone and ethanol molecule.
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Answer:
H2S has a bent geometry, while BeH2 has a linear geometry because: presence of lone pair in H2S
Absence of Lone pair in BeH2
Explanation:
<u>Structure of H2S :</u>
Atomic number of S = 16 = 1s(2 )2s(2) 2p(6) <u>3s(2 )3p(4)</u>
Outer most shell has 6 electron
Valence electron (Involved in bonding) = 6
Out of these 6 electrons ,
2 electrons are formed in bonding with Hydrogen
Rest 4 are non- bonding and present as lone - pair
H2S exist - sp3 hybridisation
There are 2-Lone pair on S in H2S (look at the image attached)
<u>Structure of H2S :</u>
Atomic number of Be = 4 = 1s(2 ) 2s(2)
Valence electron (Involved in bonding) = 2
These 2- electron are involved in bonding with two Hydrogen and form liner shape.*Form sp - hybridized
Hence shape is linear because it has non - lone pair.
VSEPR : <u><em>According to this theory lone pair causes repulsion to the bond and cause unstability in the molecule.</em></u>
<u><em>Hence the bonds shifts away from lone pairs . This is why H-S bonds in H2S shifts way from lone pair</em></u>
Answer:
Explanation:
In its raw form, function notation essentially represents an equation with only one unknown variable, expressed in terms of another. Thus, f(x) = x² + 7x can be expressed as
g(x) = 2x + 3
f(g(x)) = (2x + 3)²
f(g(x)) = 4x² + 12x + 9
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