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