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