Calculate the frequency of light associated with the transition ...

[Pineappleeh]

Calculate the frequency of light associated with the transition from n = 2 to n = 3 in the hydrogen atom.
 
  A) 2.19  1014 s-1
  B) 5.59  1014 s-1
  C) 4.57  1014 s-1
  D) 1.79  1014 s-1
  E) 3.28  1014 s-1

Question 2

Predict the charge that would be found on a carbide ion and on a nitride ion. Explain why these ions are seldom found in compounds.
 
  What will be an ideal response?

[tranoy]

Answer to Question 1

C

Answer to Question 2

The names of both ions end in ide, suggesting that they have gained electrons to form anions. In order to achieve an octet, carbon would have to gain four electrons, forming C4-. Likewise for nitride, the ion would be N3-. Both of these ions are less common because it is extremely difficult to add additional electrons to an ion that already has a -2 charge.

[Pineappleeh]

Thanks for the timely response, appreciate it

[peter]

TYSM