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