An alpha particle is another name for a(n) a. electron b. ...

[frankwu]

An alpha particle is another name for a(n)
 a. electron
  b. proton
  c. neutron
  d. helium nucleus
  e. photon

Question 2

If someone tells you they have a sample of niobium-90, can you tell how many neutrons are in the nucleus?
 a. Yes, there are 41 neutrons.
  b. Yes, there are 90 neutrons.
  c. Yes, there are 49 neutrons.
  d. No, more information must be given.
  e. No, there is no such thing as niobium..

[kaillie]

Answer to Question 1

D

Answer to Question 2

C
You do need to look up the atomic number of niobium in the periodic table.

[frankwu]

Thanks for the timely response, appreciate it

[strudel15]

Gracias!