15 Questions
What is the formula for Potassium Chromate?
K2CrO4
Which transition metal compound is correctly matched with its formula?
Copper (I) Oxide - CuO
If a compound contains the Ammonium ion, what would be the charge if combined with the Dichromate ion?
+6
According to the Valence Shell Electron Pair Repulsion Theory (VSEPR Theory), what determines the shape of a molecule?
The number of pairs of electrons around the central atom
Which type of bond is formed when two 2px orbitals overlap head-on in a Nitrogen molecule?
Sigma bond
What is a distinguishing characteristic between Ionic and Covalent compounds?
Melting and boiling points
What does the difference in electronegativity values indicate about a covalent bond?
The bond is polar
How can you determine if a liquid is polar or non-polar?
By placing a charged plastic rod near the liquid and observing the reaction
Why is water considered an excellent solvent?
Because it is a polar molecule
Why do transition metals exhibit variable valency?
Due to the energy difference between 4s and 3d sublevels
Which characteristic distinguishes transition metals from other elements?
Formation of colored compounds
Why is it significant to use Roman numerals in brackets after the name of a transition metal?
To represent the charge of the ion formed by the metal
What is the main reason for the difference in bonding between PH3 and the other three hydrides?
PH3 has a tiny electronegativity difference, while the other three have much bigger electronegativity differences.
Which of the following hydrides exhibit intermolecular hydrogen bonding between the molecules?
H2O
What is the expected polarity of B-Cl bonds in boron trichloride (BCl3) and the BCl3 molecules?
B-Cl bonds are non-polar, while BCl3 molecules are polar.
Test your knowledge on chemical bonding in the Nitrogen molecule and the differences between ionic and covalent compounds. Explore how sigma and pi bonds are formed and understand the varying properties of these two types of compounds.
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