Advertisements
Advertisements
प्रश्न
If the distance between two Cl atoms in a Cl2 molecule is 1.98Å, then the radius of the Cl atom is ______.
Advertisements
उत्तर
If the distance between two Cl atoms in a Cl2 molecule is 1.98Å, then the radius of the Cl atom is 0.99 Å.
APPEARS IN
संबंधित प्रश्न
An element X is in group 2 of the periodic table What will be the formula of its chloride?
An element Y is in second period and group 16 of the periodic table:
(i) Is it a metal or non-metal?
(ii) What is the number of valence electrons in its atom?
(iii) What is its valency?
(iv) What is the name of the element?
(v) What will be the formula of the compound formed by Y with sodium?
The non-metal A is an important constituent of our food and most of the fuels around us. A forms two oxides B and C. The oxide B is poisonous whereas oxide C causes global warming.
(a) Identify A, B and C.
(b) To which group of periodic table does A belong?
(c) Name another element which is placed in the same group as A.
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?
What was the basis of the earliest attempts made for classification and grouping of elements?
Elements belonging to the same group have the same valency.
Which one of the following statements is not correct about the trends in the properties of the elements of a period on going from left to right?
An element X combines with oxygen to form an oxide XO. This oxide is electrically conducting. Write the formula of the compound formed when X reacts with chlorine.
Identify the following:
An element in Period 1 which can be placed in both Group 1 and Group 17 of the Periodic Table.
