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