Advertisements
Advertisements
Question
Explain why, the noble gases are placed in a separate group.
Solution
Noble gases are placed in a separate group of the periodic table because they are inert elements. They are unreactive as their valence shells are completely filled with electrons. Their properties are different when compared to all the other elements.
APPEARS IN
RELATED QUESTIONS
State modern periodic law.
How would the tendency to gain electrons change on moving from left to right in a period of the periodic table?
What is a group in the periodic table?
What are the periods in a periodic table? Give two characteristics of each.
How does the electronic configuration of an atom relate to its position in the modern periodic table?
An element A has 2 electrons in its fourth shell. State its electronic configuration.
Give the chemical formula of carbonic acid
Mendeleev's periodic table : atomic mass : : Modern periodic table : _______
______ is the longest period in the periodical table.
A part of modern periodic table is given below. On its basis, answer the following questions:
| Group No. → | 1 | 2 | 13 | 14 | 15 | 16 | 17 | 18 |
| Period ↓ | ||||||||
| 2 | A | B | ||||||
| 3 | E | D | F | C |
Which of the element is a Metalloid?
