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