Main Group And Inorganic Chemistry Mock Tests

According to Wade's rules, the closo-borane anion [B₆H₆]²⁻ has which structural geometry?

Which of the following is the correct structure and oxidation state of xenon in XeOF₄? (Consider the VSEPR theory: xenon has 8 valence electrons, each F atom contributes 1 electron through a single bond, the O atom contributes 2 electrons through a double bond, and the remaining electrons form lone pairs.)

According to Wade's rules for borane clusters, closo-borane anions with the general formula [B_n H_n]²⁻ have a closed deltahedral (polyhedral) structure. How many skeletal electron pairs (SEPs) are required to build the closo structure of [B₁₂H₁₂]²⁻ (the icosahedral dodecaborate ion), and what is the corresponding deltahedral geometry? (Each BH unit contributes 2 skeletal electrons, and the 2− charge contributes 2 additional electrons.)

According to the Hard and Soft Acid Base (HSAB) theory, which of the following reactions is most favourable thermodynamically? (Recall that hard acids prefer to bind to hard bases, and soft acids prefer to bind to soft bases.)

The correct order of acidic strength for the following oxides is:

According to the HSAB (Hard and Soft Acids and Bases) theory, which of the following combinations is the most stable?