What is the molecular geometry of a molecule with 2 outer atoms and 3 lone pairs on the central atom?

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Explanation:

The valence shell electron pair repulsion theory states that the number of electron pairs on the valence shell of the central atom of a molecule determines the shape or geometry of the molecule.

For a molecule having two bonding pairs  and three lone pairs, the shape should based on a trigonal bipyramid. However, the molecular geometry is linear with a bond angle of 180 degrees.

a). in this case, dh> 0 and sd> 0. if t becomes larger, the term "-tds" will become more negative. at some point, it is possible that -dts will be more negative than the dh is positive, and the reaction will become spontaneous. this is probably the correct answer, but you should look at all of the other possibilities and make sure of that.