0
Why does the presence of lone pairs contribute to the polarity of a water molecule?
Wiki User
∙ 8y ago
How do lone pairs around the central atom affect the polarity of the molecule?
Wiki User
∙ 14y ago
Wiki User
∙ 6y agoAn extra lone pair or two could decrease the amount of bonding angles of the central atom, which'll change the shape of a molecule.
Anonymous
occupy more space than bonding electrons. The presence of lone pair electrons will distort predicted bond angles
Anonymous
Yea
Add your answer:
Earn +20 pts
What factors affect bond angle of a molecule?
Type of hybridizationthe number of lone pairs and bond pairs
Why water form 4 H-bonds?
Because of the presence of two lone pairs on Oxygen and due to polarity of the two Hydrogens, H20 can form 4 Hydrogen bonds. Bollaram Dileep Kumar
Which molecule contains non-polar covalent bond?
Any molecule where the two atoms bonded together have the same electronegativity - e.g. an element such as O2. Some molecules can have polar bonds but be non-polar overall if the polarity of the bonds 'cancel out', e.g. CO2, CCl4, NH4+ This happens if the bonds are pointing in opposing directions - draw out a diagram of CO2 which has two polar double bonds to see this. Remember to consider the shape of the molecules (including lone electron pairs) when looking at the polarity of the whole molecule.
What type of electron pairs make a molecule a good donor?
the lone pair on electron like nh3 make molecule good donor.
How many pairs of valence electrons are there on the oxygen atom in the water molecule?
4 pairs
What factors affect bond angle of a molecule?
Type of hybridizationthe number of lone pairs and bond pairs
How does molecular shape effect polarity?
The molecular geometry of a compound helps to determine polarity because, it indicates the number of lone pairs on a central atom thus giving it specified angles and polarity (only if there are lone pairs because if there are no lone pairs on the central atom, them it is non-polar).
What affects shape of a molecule?
The molecule's function and chemical and physical properties
How does polarity affect the property of water?
The shape of the water molecule is determined by the positions of the atoms in the molecule, and this shape has the electro-negative oxygen atom at one side of the H2O molecule, opposite from the two electro-positive hydrogen atoms at the other side.
Why water form 4 H-bonds?
Because of the presence of two lone pairs on Oxygen and due to polarity of the two Hydrogens, H20 can form 4 Hydrogen bonds. Bollaram Dileep Kumar
How many unshardd pairs of electrons are in a molecule of hydrogen iodide?
There would be three unshared pairs of electrons in a molecule of hydrogen iodide.
What base always base pairs with guanine?
In a DNA molecule cytosine always pairs with guanine, the same is true for an RNA molecule.
What compounds pairs up with cytosine DNA molecule?
it pairs up with guanine.
How does electron repulsion determine molecule shape?
Because they push the bonding pairs down. For example in a water molecule, it has 2 lone pairs which push the 2 bonding pairs down to form a V-shaped molecule. Hope this helps
What is the probable shape and polarity of H2O?
A molecule of water has the molecular geometry bent, which results from having 2 bonded pairs of electrons and two unbonded pairs of electrons. As to the polarity, a molecule is either polar or non-polar, based on the difference in the electronegativity values of the atoms present and the overall geometry of the molecule. There is a suficietly large electronegativity difference between the hydrogen atoms and the oxygen atom to create a polar molecule, and a bent geometry will not cancel out this polarity. Thus, water is polar.
Which molecule has a tetrahedral arrangement of electron pairs but is not a tetrahedral molecule?
Water
What pairs with cytosine in a DNA molecule?
guanosine
