Advertisements
Advertisements
प्रश्न
The tendency of an element to form cation is the ______ character of that element.
विकल्प
non metallic
basic
metallic
acidic
Advertisements
उत्तर
The tendency of an element to form cation is the metallic character of that element.
Explanation:
Metallic character is defined by an element’s ability to lose electrons easily to form positive ions, known as cations. Metals are typically electropositive, meaning they have low ionisation enthalpy and readily donate electrons, whereas non-metals tend to gain electrons to form anions.
APPEARS IN
संबंधित प्रश्न
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)
Name the periodic property which relates to the character of element which loses one or more electrons when supplied with energy.
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.
Arrange the elements of group 17 and group 1 according to the given conditions.
Increasing non – metallic character
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.
Among the elements of the second period, Li to Ne, pick out the element that is the most reactive non-metal
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.)
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.
Identify the metallic oxide which is amphoteric in nature.
The metallic character of the element decreases moving across a period from left to the right.
A metal ‘M’ is in the first group of the Periodic Table. What will be the formula of its oxide?
The metal which is hard and has a high melting point and used in filaments of electrical bulbs is ______
The lightest liquid metal is ______
Choose the odd one out and write the reason:
Arrange the following as per instruction given in the bracket.
Cs, Na, Li, K, Rb (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.
