An element with the same number of valence electrons as the ...

[Deast7027]

An element with the same number of valence electrons as the element with the electron configuration 1s2 2s2 2p6 3s2 3p5 is
 
  A) iodine.
  B) oxygen.
  C) argon.
  D) potassium.
  E) sulfur.

Question 2

If the concentration of H3O+ is 3.5  10-3 M, the concentration of OH- is ________ M.
 
  A) 2.9  10-12
  B) 1.0  10-12
  C) 1.0  10-7
  D) 3.5  10-11
  E) 10.5  10-3

Question 3

Which of the following occurs as the energy of a photon increases?
 
  A) The frequency decreases.
  B) The speed increases.
  C) The wavelength increases.
  D) The wavelength gets shorter.
  E) None of the above occurs as the energy of a photon increases.

[kristenb95]

Answer to Question 1

A

Answer to Question 2

A

Answer to Question 3

D

[Deast7027]

Gracias!

[hollysheppard095]

Great answer, keep it coming