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