Page 127 - Chemistry ICSE Class IX
P. 127
Atomic Structure and Chemical Bonding 115
(c) a doubly ionised helium atom
(d) a neutral particle
(viii) The isotope of carbon used in radiocarbon dating is
(a) 12 6 C
(b) 13 6 C
(c) 14 6 C
(d) 15 6 C
(ix) Rutherford’s D-particle scattering experiment was responsible for the discovery of
(a) atomic nucleus
(b) electron
(c) proton
(d) neutron
Answers
(i) (b) (ii) (b) (iii) (c) (iv) (c) (v) (b) (vi) (a) (vii) (c) (viii) (c)
(ix) (a)
