Advertisements
Advertisements
Question
Name the type of elements which have one electron short of octet.
Advertisements
Solution
Halogens
APPEARS IN
RELATED QUESTIONS
Give alongside is a part of the periodic table :
As we move horizontally from left to right:
| Li | Be | B | C | N | O | F | |
| Na | Mg | Al | Si | P | S | Cl |
(i) What happens to the metallic character of the elements?
(ii) What happens to the atomic size?
What is a group in the periodic table?
Define:
Periodic table
Arrange the elements of second and third periods in increasing order of their atomic size.
Third Period.
Give the symbol and valency of the following element and radical.
Ammonium
Write a scientific reason.
There was ambiguity about the correct position of hydrogen in Mendeleev’s periodic table.
Identify gas A in the following experiment.

Spot the error:
There are 5 periods and 17 groups in the modern periodic 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 Noble gas?
Answer the following in respect of element \[\ce{_16^32S}\].
Give its electronic configuration.
