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प्रश्न
Electropositivity means ______.
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उत्तर
Electropositivity means the tendency of an atom of an element to form cation by losing its valence electrons.
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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).
Name any five periods properties.
Metallic character and non-metallic character are periodic properties discuss ?
Give the trend in metallic character:
(i) across the period left to right
Explain the following:
Group 17 elements are strong non-metals, while group 1 elements are strong metals.
Complete the following sentences
Moving across a ………….. of the periodic table the elements show increasing ………………..character (group, period, metallic, non-metallic).
A metal M forms as oxide having the formula M2O3. It belongs to third period. Write the atomic number and valency of the metal.
Among the elements of the second period, Li to Ne, pick out the element that is the most reactive metal
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?
Explain
Larger the atomic size, more metallic is the element.
Explain
Group 17 elements are non-metals, while group 1 elements are metals.
The tendency of an element to form cation is the ______ character of that element.
The metallic character of the element decreases moving across a period from left to the right.
On moving down the group metallic character increases.
Write an explanation.
Electronegativity
Three elements B, Si and Ge are
Metals are good ______ (oxidising agents/reducing agents) because they are electron ______ (acceptors/donors).
Arrange:
Be, Li, C, B, N, O, F (in increasing metallic character).
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.
