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