Advertisements
Advertisements
प्रश्न
The metallic character of the element decreases moving across a period from left to the right.
पर्याय
Right
Wrong
Advertisements
उत्तर
The metallic character of the element decreases moving across a period from left to the right- Right
संबंधित प्रश्न
Is is metal or non-metal?
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?
- Is it more or less reactive than calcium?
- What is its valency?
- What will be the formula of its phosphate?
- is it larger or smaller than caesium (Cs) in size?
How do the following change on moving from left to right in a period of the periodic table?
Give examples in support of your answer.
Nature of oxides of the elements ?
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?
Arrange the elements of group 17 and group 1 according to the given conditions.
Increasing non – metallic character
Among the elements of the second period, Li to Ne, pick out the element that is the most reactive non-metal
State whether the following statement is true or false
All members of zero group are non metals.
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 questions in relation to the above group of elements:
- Which element has the most metallic character?
- Which element would be expected to have the highest electronegativity?
- If the electronic configuration of aluminium is 2, 8, 3, how many electrons will be there in the outermost shell of thallium?
- The atomic number of boron is 5. Write the chemical formula of the compound formed when boron reacts with chlorine.
- Will the elements in the group to the right of this boron group be more metallic or less metallic in character? Justify your answer.
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.
On moving down the group metallic character increases.
Write an explanation.
Electronegativity
3, 1, 2 electrons are in valence shells of X, Y, Z elements resp. From this information, write the name of the groups it belongs to and its valency.
Which of the following sets of atomic numbers belong to that of alkali metals?
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 ______ (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.
