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.
S decays faster than Q
Q is twice as stable as S
Q emits fewer particles than S
S is more stable than Q
Correct answer is D
No explanation has been provided for this answer.
Which of the orbitals 4s, 4p, 4d and 4f has the lowest energy?
4f
4p
4d
4s
Correct answer is D
No explanation has been provided for this answer.
Pauli Exclusion Principle is related to
quantum numbers of electrons
reversiblility of equlibrium reactions
electronegativity values of elements
collision theory of reaction rates
Correct answer is A
No explanation has been provided for this answer.
What is the electronic configuration of an element represented as 199X?
1s 22s2 2p 5
1s22s23s23p3
1s2 2s2 2p 33s2
1s 22s22p 63s23p64s 1
Correct answer is A
No explanation has been provided for this answer.
Which of the following atoms contains the highest number of electrons in the outermost shell?
8O
10Ne
15P
19K
Correct answer is B
No explanation has been provided for this answer.