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[ Post UTME Begins ]:
View The List Of Schools That Have Released 2026 Post-UTME Forms.
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Introduction to the tetravalency of carbon
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2696
The atom of an element X is represented as \(^y_z X\). The basic chemical properties of X depend on the value of
A.
Y
B.
Z
C.
Y - Z
D.
Z - Y
View Answer & Discuss (5)
WAEC 2002
2697
The atomic number of chlorine is 17. What is the number of electrons in a chloride ion?
A.
16
B.
17
C.
18
D.
19
View Answer & Discuss (1)
WAEC 2002
2698
A hydrogen atom which has lost an electron contains
A.
one proton only
B.
one neutron only
C.
one proton and one neutron
D.
one proton, one electronic and one neutron
View Answer & Discuss (6)
WAEC 2002
2699
Which of the following elements has a ground state electronic configuration with an incomplete penultimate shell?
A.
Iron
B.
Sodium
C.
Aluminium
D.
Calcium
View Answer & Discuss (2)
WAEC 2002
2700
The conclusion from Rutherford's alpha-scattering experiment is that
A.
atoms are mostly empty space with a small nucleus
B.
emissions from radioactive substances consist of three main components
C.
there is nuclear pull on orbital electrons
D.
electrons are deflected by both magnetic and electric fields
View Answer & Discuss
WAEC 2002
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