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