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
Answer the following in respect of element `31/15 P `
Is it a metal or non - metal
Name any five periods properties.
Give the trend in metallic character:
down the group top to bottom.
How does the chemical reactivity of
alkali metals vary?
A metal M forms as oxide having the formula M2O3. It belongs to third period. Write the atomic number and valency of the metal.
Mg2+, Cu2+, Na1+, H1+ (In the order of preferential discharge at the cathode)
Among the elements of the second period, Li to Ne, pick out the element that is the most reactive metal
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 | 3 | 4 | 5 | 6 | 7 | 8 |
| H | He | ||||||
| A | B | ||||||
| C | D |
Will the most metallic element be found at A,B,C or D ?
Select the correct answer
Configuration of an element is 2, 8, 1. Which of the following statement is true?
Match the atomic number with the following:
A metal of valency one.
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 :
Arrange the following elements in order of their decreasing metallic character.
Na, Si, Cl, Mg, Al
The tendency of an element to form cation is the _______ character of that element.
Write the name.
The atom having the smallest atomic radius from zero group.
Write the name.
Two elements having two orbits.
Write scientific reason.
The metallic character of elements increases while going down the groups.
The lightest liquid metal is ______
Which of the following sets of atomic numbers belong to that of alkali metals?
Arrange:
Be, Li, C, B, N, O, F (in increasing metallic character).
