In the modern periodic table, which period has 32 elements?
A. Period 4
B. Period 3
C. Period 5
D. Period 6
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Arrange the following elements in order of their increasing nonmetal properties: Li, O, C, Be, F
A. F < O < BE < C < Li
B. Li < Be < C < O < F
C. F < C < O < Be < Li
D. F < O < C < Be < Li
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In which groups elements of d-block are found?
A. 18th group only
B. Elements of 8th group only
C. Elements of 9th group
D. Between 13 to 2 (3-12)
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In Mendeleev's periodic table, in what order were the elements arranged?
A. In increasing order of atomic masses
B. In decreasing order of atomic masses
C. In increasing order of atomic numbers
D. Decreasing order of atomic numbers
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Which of the following is true regarding metals?
A. Metals have 1 or more valence electrons in their outer shells
B. Metals have 4 or more valence electrons in their outer shells
C. Metals have 1 to 4 valence electrons in their outer shells
D. Metals have 8 valence electrons in their outer shells
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The sixth period of the modern periodic table contains the . . . . . . . . element?
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The atomic radius of potassium is . . . . . . . . Sodium.
A. less than
B. more than
C. half
D. equal
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Elements of group 1 are called . . . . . . . .?
A. halogen
B. alkaline metal
C. noble gases
D. alkaline earth metals
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In . . . . . . . . the valence electrons of elements increase when moving from one side to the other?
A. group
B. column
C. class
D. period
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Which of the following element has maximum density?
A. Platinum
B. Osmium
C. Mercury
D. Lead
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Group of modern periodic table. . . . . . . in, an element with electronic configuration of 2, 8, 6 is placed.
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If there are 12 protons in the nucleus of an element, then it belongs to group . . . . . . . .
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Match
List I with
List II .
List-I
List-II
a. Most reactive alkali metal
1. F
b. Chemically most active non-metal
2. Cs
c. Metal with maximum density
3. Hg
d. Transition metals is in liquid state
4. Os
A. a-4, b-3, c-2, d-1
B. a-1, b-4, c-3, d-2
C. a-2, b-1, c-4, d-3
D. a-3, b-2, c-1, d-4
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. . . . . . . . is not a transition metal.
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Which of the following scientists does not contribute to the construction of modern periodic table?
A. Democritus
B. Al-Razi and John Newlands
C. Johann Wolfgang Dobereiner
D. Henry Mosely
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The elements of the first group are called.
A. Inert gases
B. Halogen
C. Alkali metals
D. Alkaline soil metals
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All the elements in a group in the Periodic Table have the same
A. atomic weight
B. number of valence electrons
C. atomic number
D. None of the above
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In Mendeleev's periodic table, the vertical columns are called . . . . . . . . . and horizontal rows are called . . . . . . . .?
A. period, row
B. group, period
C. column, category
D. column, row
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. . . . . . . . . it is the only nonmetal, paired with alkaline metals.
A. Rubidium
B. Cesium
C. Hydrogen
D. Francium
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In the modern periodic table. There are inconsistencies regarding the position of . . . . . . . . as it can be placed in the first group of the first period and the 17th group.
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