Question:
Fill in the blanks in the following statements :
(a) Rutherfords a-particle scattering experiment led to the discovery of the .
(b) Isotopes have same but different
(c) Neon and chlorine have atomic numbers 10 and 17 respectively. Their valencies will be and respectively.
(d) The electronic configuration of silicon is and that of sulphur is
Solution:
(a) nucleus
(b) atomic numbers, mass numbers
(c) zero and one
(d) $2,8,4$ and $2,8,6$.
Click here to get exam-ready with eSaral
For making your preparation journey smoother of JEE, NEET and Class 8 to 10, grab our app now.