Advertisements
Advertisements
प्रश्न
Write an Explanation.
Electronegativity
Advertisements
उत्तर
Electronegativity is the tendency of an atom to attract the shared pair of electrons towards itself in a chemical bond. Elements with high electronegativity strongly pull electrons, while those with low electronegativity tend to lose electrons easily. Electronegativity decreases down a group due to increased atomic size, and increases across a period due to increasing nuclear charge.
APPEARS IN
संबंधित प्रश्न
Answer the following in respect of element `31/15 P `
Is it a metal or non - metal
Give the trend in metallic character:
down the group top to bottom.
Explain the following:
Metallic character of elements decreases from left to right in a period while it increases in moving down a group.
An element barium has atomic number 56. Look up its position in the periodic table and answer the following question.
Is it a metal or a non-metal?
An element X belong to 3rd periods and group II of the periodic table state:
whether it is a metal or a non-metal.
The electronic configuration of an element T is 2, 8, 8, 1.
Is it a metal or a non-metal?
Which has the maximum metallic character Na, Li or K?
Explain why the following statement is not correct:
All groups contain metals and non metals.
Explain
Group 17 elements are non-metals, while group 1 elements are metals.
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 :
Write the name.
Two elements having two orbits.
Write scientific reason.
The metallic character of elements increases while going down the groups.
3, 1, 2 electrons are in valence shells of X, Y, Z elements. From this information, state the group in which they belong and write their valencies.
A metal ‘M’ is in the first group of the Periodic Table. What will be the formula of its oxide?
Which of the following set of elements is written in order of their increasing metallic character?
The metal which is hard and has a high melting point and used in filaments of electrical bulbs is ______
Three elements B, Si and Ge are
Choose the odd one out and write the reason:
A group of elements in the periodic table is given below (Boron is the first member of the group and Thallium is the last).
Boron, Aluminium, Gallium, Indium, Thallium
Answer the following question in relation to the above group of elements:
Will the elements in the group to the right of this boron group be more metallic or less metallic in character? Justify your answer.
