Advertisements
Advertisements
प्रश्न
State what is meant by the term chemical formula.
Advertisements
उत्तर
Chemical formula is the representation of a substance by means of symbols.
APPEARS IN
संबंधित प्रश्न
Fill in the following blank with suitable word:
The basis for modern periodic table is ...............
Give two example of group 1 elements.
On which side of the periodic table will you find metals?
What is the major characteristic of the first elements in the periods of the periodic table? What is the general name of such elements?
On the basis of electronic configuration, how will you identify the first element of a period?
Name two elements in halogens.
An element A has 2 electrons in its fourth shell. State its electronic configuration.
Name the cation and the anion in the salt – calcium sulphate
Give the symbol and valency of the following element and radical.
Zinc
An X element with atomic number 11 and Y element with atomic number 13 belongs to the third period in the modern periodic table. With this information, give the answers of the below questions.
- Which element has more metallic character from these two elements?
- What is the valency of each X and Y elements?
- Atom size of Y element is smaller than atom size of X element? Explain?
