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प्रश्न
Write an Explanation.
Electropositivity
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उत्तर
Electropositivity is the tendency of an atom to lose one or more electrons and form a positive ion (cation). Elements that easily donate electrons are called electropositive elements. Electropositivity increases down a group due to an increase in atomic size, and decreases across a period due to an increasing nuclear charge.
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संबंधित प्रश्न
Arrange the following as per the instruction given in the bracket.
Cs, Na, Li, K, Rb (increasing order of metallic character).
Arrange the following as per the instructions given in the brackets:
Na, K, Cl, S, Si (increasing order ionization energy)
Arrange the following as per the instructions given in the brackets:
Cl, F, Br, I (increasing order of electron affinity)
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.
Is is metal or non-metal?
Answer the following in respect of element `31/15 P `
Is it a metal or non - metal
Explain the following:
Group 17 elements are strong non-metals, while group 1 elements are strong metals.
The electronic configuration of an element T is 2, 8, 8, 1.
Is it a metal or a non-metal?
Choose the correct answer.
An alkaline earth metal
(i) Lead
(ii) potassium
(iii) calcium
(iv) Copper
State whether the following statement is true or false
All members of zero group are non metals.
Explain
Group 17 elements are non-metals, while group 1 elements are metals.
Select the correct answer
Configuration of an element is 2, 8, 1. Which of the following statement is true?
Write the name.
The atom having the smallest atomic radius from zero group.
Write scientific reason.
The metallic character of elements increases while going down the groups.
Identify the elements with the following property and arrange them in increasing order of their reactivity
- An element which is a soft and reactive metal
- The metal which is an important constituent of limestone
- The metal which exists in liquid state at room temperature
Which of the following metal (s) do not react with water?
Choose the odd one out and write the reason:
Arrange:
Be, Li, C, B, N, O, F (in increasing metallic character).
