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The solid halogen is:

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Important Questions on Periodic Classification of Elements

MEDIUM
Science>Chemistry>Periodic Classification of Elements>Periodic trends in the modern periodic table
On moving from left to right in a period of the periodic table, the atomic number of elements increases. What happens to the size of atoms of elements on moving from left to right in a period?
MEDIUM
Science>Chemistry>Periodic Classification of Elements>Periodic trends in the modern periodic table
The element at the bottom of a group would be expected to show _____ metallic character than the element at the top.
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Science>Chemistry>Periodic Classification of Elements>Periodic trends in the modern periodic table
The electropositive nature of elements _____ on going from left to right in a period of the periodic table. (increases/ decreases)
MEDIUM
Science>Chemistry>Periodic Classification of Elements>Periodic trends in the modern periodic table
Which one of the following does not increase while moving down the group of the periodic table?
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Science>Chemistry>Periodic Classification of Elements>Periodic trends in the modern periodic table

Which one of the following depicts the correct representation of atomic radius (r) of an atom?

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Science>Chemistry>Periodic Classification of Elements>Periodic trends in the modern periodic table
Metallic character _____ on moving across a period.
HARD
Science>Chemistry>Periodic Classification of Elements>Periodic trends in the modern periodic table
The atomic numbers of the elements Na, Mg, K and Ca are 11, 12, 19 and 20, respectively. The element having the largest atomic radius is:
EASY
Science>Chemistry>Periodic Classification of Elements>Periodic trends in the modern periodic table
The valency of elements in group 2 is _____.
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Science>Chemistry>Periodic Classification of Elements>Periodic trends in the modern periodic table
Which of the following is the most active metal?
MEDIUM
Science>Chemistry>Periodic Classification of Elements>Periodic trends in the modern periodic table
_____ has the highest value of atomic volume. (Helium / Francium)
MEDIUM
Science>Chemistry>Periodic Classification of Elements>Periodic trends in the modern periodic table
Which of the following is correct order of atomic radii ?
EASY
Science>Chemistry>Periodic Classification of Elements>Periodic trends in the modern periodic table
Element X forms a chloride with the formula XCl2, which is a solid with a high melting point. X would most likely be in the same group of the Periodic Table as
EASY
Science>Chemistry>Periodic Classification of Elements>Periodic trends in the modern periodic table
Metallic character _____ on going down the group.
MEDIUM
Science>Chemistry>Periodic Classification of Elements>Periodic trends in the modern periodic table
Which of the following set of elements is written correctly in the order of their increasing metallic character?
HARD
Science>Chemistry>Periodic Classification of Elements>Periodic trends in the modern periodic table
Elements forming oxides with same type of formula will have _____ chemical properties. (same / different)
MEDIUM
Science>Chemistry>Periodic Classification of Elements>Periodic trends in the modern periodic table
Atomic size of elements increases from top to bottom in a group as more electrons are added to the same _____. (atom / shell)
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Science>Chemistry>Periodic Classification of Elements>Periodic trends in the modern periodic table
Ionization energy can be defined as the amount of energy needed to _____ an electron from a neutral gaseous atom of an element.
MEDIUM
Science>Chemistry>Periodic Classification of Elements>Periodic trends in the modern periodic table
The tendency to gain electron _____ on going from top to bottom in a group of the periodic table.                                                    (increases/ decreases)
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Science>Chemistry>Periodic Classification of Elements>Periodic trends in the modern periodic table
The general electronic configuration of transition elements is (n-1)d1-ans1-2. The value of a will be _____. (6, 7, 10)
EASY
Science>Chemistry>Periodic Classification of Elements>Periodic trends in the modern periodic table

Which of the following statements is not a correct statement about the trends when going from left to right across the periods of Periodic Table.