There are different types of bonds based on electronegativity. One bond type is known as non-polar covalent. Which choice below
has this bond type? A. all of the compounds B. H2 C. H2O D. NaCl
2 answers:
Answer:
H₂ has a non-polar covalent bond.
Explanation:
First, remember that a covalent bond occurs when two atoms with zero or very low difference of electronegativity share one or more pair of electrons, that's why <u>covalent bonds are very common between atoms of the same elements</u>, for example in the case of H₂, where the difference of electronegativity is zero.
Also, covalent bonds are non-polar when the atoms in the bond has the same electronegativity so the electronic density is symmetric distributed.
The molecule that has those characteristics is the molecule of Hydrogen (H₂) so it has a non-polar covalent bond.
On the other side, the molecule of water (H₂O) has covalent bond between hydrogen and oxygen atoms but the oxigen atom has 2 pairs of non bonded electrons that creates a zone with high electronic density making this molecule polar (you can see those pair of non bonded electrons in red in the attachment).
Finally, the molecule of chloride sodium (NaCl) is a type of ionic bond.
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Number of gold, atoms in
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From the formula of compound that is it is clear that the number of potassium and gold are same whereas those of carbon and nitrogen are 2 times of them.
So, the number of atoms of each element is:
Number of potassium, atoms in
=
atoms
Number of carbon, atoms in
=
atoms =
Number of nitrogen, atoms in
=
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Total number of atoms in = Number of gold,
atoms+Number of potassium,
atoms +Number of carbon,
atoms + Number of nitrogen,
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Total number of atoms in =
Total number of atoms in =
atoms
Hence, the total number of atoms in is
atoms.