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प्रश्न
Write a scientific reason.
The non-metallic character increases while going from left to right in a period.
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उत्तर
- While going from left to right in a period, electrons are added to the same outermost shell. At the same time, protons get added in the nucleus, increasing the nuclear charge.
- Hence, these electrons experience greater pull from the nucleus due to increased effective nuclear charge.
- As a result, the ability of an atom to become an anion by accepting outside electrons increases.
- The non-metallic character of an atom is its tendency to gain electrons.
Hence, non-metallic character increases while going from left to right in a period.
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संबंधित प्रश्न
Is is metal or non-metal?
Give the trend in metallic character:
(i) across the period left to right
Give the trend in metallic character:
down the group top to bottom.
Explain the following:
Group 17 elements are strong non-metals, while group 1 elements are strong metals.
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?
How does the chemical reactivity of
alkali metals vary?
Complete the following sentences
Moving across a ………….. of the periodic table the elements show increasing ………………..character (group, period, metallic, non-metallic).
The elements at the bottom of a group would be expected to show ______ metallic character than the element at the top.
Mg2+, Cu2+, Na1+, H1+ (In the order of preferential discharge at the cathode)
State whether the following statement is true or false
All members of zero group are non metals.
If an element is in group 7 is it likely to be metallic or non metallic in character?
Copy and complete the following sentence choosing the correct word or words from those given below, at the end of the sentence:
The element at the bottom of a group would be expected to show ______ metallic character than the element at the top.
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?
Identify the metallic oxide which is amphoteric in nature.
Arrange the following elements in order of their decreasing metallic character.
Na, Si, Cl, Mg, Al
Write the name.
Two elements having two orbits.
On moving down the group metallic character increases.
Write an explanation.
Electronegativity
