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