Advertisements
Advertisements
प्रश्न
Write a scientific reason.
Metallic character goes on decreasing while going from left to right in a period.
Advertisements
उत्तर
- An atom's metallic nature is characterised by its propensity for losing electrons.
- Electrons are added to the same outermost shell as they move from left to right over time. At the same time, protons are added to the nucleus, increasing its charge.
- As a result of the higher effective nuclear charge, these electrons are attracted to the nucleus more strongly.
- As a result, it is more difficult to remove a valence electron from an atom.
Hence, metallic character goes on decreasing while going from left to right in a period.
संबंधित प्रश्न
Arrange the following as per the instruction given in the bracket.
Cs, Na, Li, K, Rb (increasing order of metallic character).
In Period 3 of the Periodic Table, element B is placed to the left of element A. On the basis of this information, choose the correct word from the option to complete the following statement:
The element B would have ______ metallic character than A.
Name any five periods properties.
How does the chemical reactivity of
alkali metals vary?
The elements at the bottom of a group would be expected to show ______ metallic character than the element at the top.
Study the extract of the Periodic Table given below and answer the questions that follow. Give the alphabet corresponding to the element in question. DO NOT repeat an element. 
Which non-metallic element has the valency of 2?
For the main group of the periodic table, the metallic properties of the elements vary approximately with their position as shown in the table.
| 1 | 2 | 13 | 14 | 15 | 16 | 17 | 18 |
| H | He | ||||||
| A | B | ||||||
| C | D |
- Will the most metallic element be found at A, B, C or D?
- Will the most non-metallic element be found at A, B, C or D?
State whether the following statement is true or false
All members of zero group are non metals.
In the third period, which is the most metallic and most non-metallic element?
Select the correct answer
Configuration of an element is 2, 8, 1. Which of the following statement is true?
If an element is in group 7 is it likely to be metallic or non metallic in character?
Refering to changes in the properties of elements on moving from left to right across a period of the periodic table. Choose the correct answer.
The non-metallic character of the elements :
The metallic character of the element decreases moving across a period from left to the right.
Write an explanation.
Electropositivity
Write an explanation.
Electronegativity
The lightest liquid metal is ______
Three elements B, Si and Ge are
Which of the following set of elements is written in order of their increasing metallic character?
Metals are good ______ (oxidising agents/reducing agents) because they are electron ______ (acceptors/donors).
