Fill in the blanks in the following statements
(a) Rutherford’s α-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 ———

AcademicChemistryNCERTClass 9

 Fill in the blanks in the following statements

(a) Rutherford’s α-particle scattering experiment led to the discovery of the nucleus.

(b) Isotopes have same atomic number but different mass number.

(c) Neon and chlorine have atomic numbers 10 and 17 respectively. Their valencies will be and respectively.

(d) The electronic configuration of silicon is 2,8,4 and that of sulphur is 2,8,6.

raja
Updated on 10-Oct-2022 13:32:33

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