Questions

It's important here to focus on the word "implemented". "There's nothing wrong with having a thousand great ideas, but if the only place they live is on your notepad what's the point? Better still you need a good ending. If your previous company took your advice and ended up going bankrupt, that's not such a great example either.Be prepared with a story about an idea of yours that was taken from idea to implementation and considered successful.

Probability of sending the correct material is 4/5

Probability of the material not being damaged in transit is 1/4

Probability that there is no short shipment = 2/3

∴ Required probability =4/5 x 1/4 x 2/3 = 2/15

Virgil and Horace were the famous Roman poets.

Tacitus and Plinky were the famous Roman historians.

Marcus was a Roman Philosopher.

When atoms react they do so in order to reach the lowest energy, which is the most stable. The electrons orbitals will overlap in the way that reduces the energy the most. Orbitals of similar energy will produce the greatest stabilisation.The answer you gave isn't the whole story, it depends what species is reacting with what. The effective nuclear charge on the atom will affect the energy of the valance electrons.

Hence, the reactivity of an atom arises from the existence of unpaired electrons in the valence shell.