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