Advertisements
Advertisements
प्रश्न
Write an explanation.
Electropositivity
Advertisements
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.
APPEARS IN
संबंधित प्रश्न
Arrange the following as per the instructions given in the brackets:
Na, K, Cl, S, Si (increasing order ionization energy)
Give the trend in metallic character:
(i) across the period left to right
Name the periodic property which relates to the character of element which loses one or more electrons when supplied with energy.
Explain the following:
Metallic character of elements decreases from left to right in a period while it increases in moving down a group.
How does the chemical reactivity of
alkali metals vary?
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?
The elements at the bottom of a group would be expected to show ______ metallic character than the element at the top.
Explain why the following statement is not correct:
All groups contain metals and non metals.
Among the elements of the second period, Li to Ne, pick out the element that is the most reactive metal
A group of elements in the periodic table is given below (Boron is the first member of the group and Thallium is the last). Answer the following question in relation to the given group of elements:
Which element has the most metallic character?
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.
The tendency of an element to form anion is the ______ character of that element.
Write the name.
The atom having the smallest atomic radius from zero group.
Electronegativity is the metallic property of an element.
Write scientific reason.
The metallic character of elements increases while going down the groups.
Which of the following metal (s) do not react with water?
Arrange the following as per instruction given in the bracket.
Cs, Na, Li, K, Rb (increasing metallic character)
Metals are good ______ because they are electron ______.
