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