1. Among the scientists who were responsible for the development of the periodic table are: I. Dmitri Mendeleev II. Johann Dobereiner and III. John Newlands. Arrange their names in order of the history of the development of the periodic table.
a.I , II, III c. III, I, II
b. II, III, I d. III, II, I
2. Who was the scientist who arranged the elements according to groups of three?
a. John Dalton b. Johann Wolfgang
c. John Alexander Dobereneir
Newlands d. Dmitri Inovich Mendeleev
3. All the elements belonging to Group II A have ___ electron(s) in its outermost shell.
a. 1 b. 2
c. 3 d. 4
4. Which of the following is an alkali metal?
a. Ba b. Pb
c. Li d. Fe
5. Which of the following statements is NOT correct?
a. Atoms become smaller as one moves down a
group.
b. Atoms become smaller as one moves to the right
across a period.
c. Atoms become larger when electrons are
removed.
d. The size of an atom is not a factor in arranging
the elements in the periodic table.
6. Who was the scientist who arranged the elements in
horizontal rows according to increasing atomic
masses?
a. John Dalton c. Dmitri
Inovich Mendeleev
b. Johann Wolfgang d. John
Alexander
Dobreneir Newlands
7. Which orbital is being filled in the lanthanide series
of elements?
a. 4f c. 5f
b. 4d d. 5d
8. Which of the following sets is a set of all metals?
a. S, Li, C c. K, Li, Na
b. He, Be, Ne d. Ca, Cr, Co
9. Each vertical column of the periodic table is called
a. a period c. a group
b. a row d. none of
these
10. What family of elements includes helium and neon?
a. noble gases c.
halogens
b. alkali metals d. none of
these
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