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