Advertisements
Advertisements
Question
State how the valency of elements varies in a group of the periodic table?
Solution
In a group, all the elements will have the same valency because all the electrons have the same number of electrons in their outermost shell.
APPEARS IN
RELATED QUESTIONS
Explain why, the noble gases are placed in a separate group.
The atomic particle whose number in the atoms of an element always remains the same and which forms the real basis for the modern classification of elements is:
(a) electron
(b) proton
(c) neutron
(d) meson
Name the type of elements which have outermost shell incomplete.
How does the electronic configuration of an atom relate to its position in the modern periodic table?
Give the chemical formula of calcium phosphate
In the modern periodic table, the positions of 1 to 20 elements are shown here. Identify the elements A and B. Write their atomic number.
Identify gas A in the following experiment.
The element which has the least tendency to lose electrons is ______
Which of the following is the outermost shell for elements of period 2?
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?
