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 electronic configuration of Mg 2+ is
ls 22s 22P 63s23P2
Is22s22P6
ls22s22p63s2
ls22s22P4
Correct answer is B
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 electron and one neutron
Correct answer is A
No explanation has been provided for this answer.
If the elements X and Y have atomic numbers 11 and 17 respectively, what type of bond can they form?
Dative
Covalent
Ionic
Metallic
Correct answer is C
No explanation has been provided for this answer.
I and lll only
ll and lV only
l, ll and lll only
l, ll, lll and lV
Correct answer is D
No explanation has been provided for this answer.
200 cm3
400 cm3
600 cm3
700 cm3
Correct answer is B
No explanation has been provided for this answer.