Class 10 | Periodic Classification Of Elements
1 March 2024 EasyLearning
Flash Card
The d-block elements are called as ............ elements.
Valency of oxygen is........ .
The element eka-silicon in Mendeleev's periodic table is known as .............. in the modern periodic table.
Dobereiner laid down the ............ rule.
Lithium (Li), ............. and potassium(K) is Dobereiner's traid.
........... is the first element of group 16.
The lanthanide and actinide series at the bottom form the ........... block.
In modern periodic table, the number of groups and periods are ......... and ........... respectively.
The molecular formula of gallium oxide is ............ .
Which of the following is CORRECT?
Valency of elements............. in a period from left to right.
Which is the most electropositive element in period 2?
On moving from left to right in a periodic table, the size of the atom............. .
Valency of the elements in the halagen family is............ .
The formula of compound formed in the reaction between calcium and fluorine is:
A student was asked to select two elements in a periodic table. He selects neon and argon. In both these elements, the number of electrons in the outermost shell is......... .
The maximum electron capacity of L shell is............. .
In which block of the modern periodic table are the nonmetals found?
Which of the following is a metalloid?
According to Mendeleev's periodic law, properties of elements are periodic function of their......... .
Among the following,............ is the most electronegative element.
Which among the following elements would lose an electron easily?
Newlands Law of Octaves is applicable up to
Calcium, strontium and ............. form a Dobereiner's traid.
Atomic radius is expressed in the unit............. .
The elements of group 17 are called........... .
.................. is the distance between the nucleus of the atom and its outermost shell.
At the time of Mendeleev .............. elements were known.
Which pair of atomic numbers represents elements in the same group?
Which of the following statements is CORRECT regarding to Newlands' octaves?
In the modern periodic table, the elements are arranged in accordance with their .......... .
Dobereiner's traids are the group of 3 elements with ............. .
The metallic character of elements............. in a group from top to bottom.
For elements of period 2, ............ is the outermost shell occupied by electrons.
Which of the following is the lightest inert gas?
The groups 1 and 2 constitute the ........... block.
Phosphorus is placed in......
The correct decreasing order of atomic radius is:
Which of the following element has valency equal to 0?
Electronic configuration of element X is 2, 8, 2. It belongs to............ in the modern periodic table.
Which pair of elements will have similar properties?
Which among the following has the largest atomic radius?
Identify the element which does NOT belong to period 3.
Halogen which is liquid at room temperature is ............ .
X and Y are two elements having similar properties which obey Newlands's Law of Octaves. The minimum number of elements in between X and Y is ................. .
According to Mendeleev's prediction, what is the nature of the oxide formed by the element eka-aluminium?
The number of electrons in the outermost shell of alkali metals is......... .
The maximum electron capacity of N shell is............. .
CORRECT increasing order of atomic radius in alkaline earth metal is............. .
Alkaline earth metals have valency 2. This means that their position in the modern periodic table is in......... .
