Learn more about the properties, composition, and structure of substances (elements and compounds) with these Chemistry questions and answers. This Test can be used by students preparing for Chemistry in JAMB, WAEC, NECO or Post UTME.
The conclusion from Rutherford's alpha-scattering experiment is that
atoms are mostly empty space with a small nucleus
emissions from radioactive substances consist of three main components
there is nuclear pull on orbital electrons
electrons are deflected by both magnetic and electric fields
Correct answer is A
No explanation has been provided for this answer.
Iron
Sodium
Aluminium
Calcium
Correct answer is A
No explanation has been provided for this answer.
A hydrogen atom which has lost an electron contains
one proton only
one neutron only
one proton and one neutron
one proton, one electronic and one neutron
Correct answer is A
No explanation has been provided for this answer.
The atomic number of chlorine is 17. What is the number of electrons in a chloride ion?
16
17
18
19
Correct answer is C
Cl = 17 = 2, 8, 7.
Cl ion = Cl\(^-\) = 2, 8, 8 = 18.
Y
Z
Y - Z
Z - Y
Correct answer is B
No explanation has been provided for this answer.