Chemistry
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Past Questions
Question 2383
waec 2008
a
they exist in different physical states
b
they exist as diatomic molecules
c
their ionic radii decrease down the group
d
their melting and bolling points increase down the group
Question 2384
waec 2008
a
the same number of valence electrons
b
the same number of electron shells
c
different chemical behaviour
d
the same atomic size
Question 2385
waec 2008
a
W and X only
b
Y and Z only
c
W and Y only
d
W, Y and Z only
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