Question

Why is Rutherford’s foil experiment significant

A) it led to the discovery of the electron

B) it led to the discovery of the nucleus

C) it led to the discovery of the proton

D) It led to the discovery of the neutron

A cation is created when

A) electrons are lost

B) electrons are gained

C) the atom becomes positive

D) both a and c

E) none of the above

According to the law of definite proportions any two samples of KCI have

A) slightly different molecular structure

B) the same melting light

C) same ratio of elements

D) none of the above

Answer 1

In Rutherford gold foil experiment alpha particles were passed through thin foil of gold most of alpha particles passed through whereas few particles were reflected back showing the presence of small center to atoms called nucleus

Answer (B) it led to discovery of nucleus

A cation is a possitively charged ion formed by losing one or more electrons. usually first and second group elements in periodic table tend to form cation as they have one or two outer orbital electrons which can be donated readily

Answer (D) both a and c

According to law of definite proportions a compound will always have same proportion of elements by mass so answer will be same ratio of elements

Answer (C) same ratio of elements