Free help with homework

Why join Brainly?

  • ask questions about your assignment
  • get answers with explanations
  • find similar questions

What will be the composition of the nucleus of the atom of an element with atomic number 19 and mass number 39 ? also write the electronic configuration.



No. of nuleons=mass no.=no. of [p{+}] + [n^{0}]
gn. A=39
and p^{+}=19
Electronic config. = 2,8,9
also 1s^{2} , 2s^{2} , 2p^{6} , 3s^{2} , 3p^{6} , 4s^{1}
0 0 0
The Brain
  • The Brain
  • Helper
Not sure about the answer?
Learn more with Brainly!
Having trouble with your homework?
Get free help!
  • 80% of questions are answered in under 10 minutes
  • Answers come with explanations, so that you can learn
  • Answer quality is ensured by our experts