Advertisements
Advertisements
प्रश्न
XY compound is formed by X (Atomic number 11) and Y (Atomic number 17), then answer the questions given below.
- Determine the position of the element X and Y periodic table.
- Which type of elements X and Y are metals, nonmetals or metalloids?
- From which block the elements X and Y are?
- Determine the electronic configuration and valency of these elements.
Advertisements
उत्तर
- Position in the Periodic Table
- Element X: Placed in Period 3, Group 1 (Since it has 3 electron shells and 1 valence electron).
- Element Y: Placed in Period 3, Group 17 (Since it has 3 electron shells and 7 valence electrons).
- Type of Element (Metal/Nonmetal/Metalloid)
- Element X: It is a metal (specifically, an alkali metal that easily loses its 1 outer electron).
- Element Y: It is a nonmetal (specifically, a halogen that easily gains 1 electron).
- Block of the Periodic Table
- Element X: Belongs to the s-block (its outermost electron enters the s-orbital).
- Element Y: Belongs to the p-block (its outermost electrons enter the p-orbital).
- Electronic Configuration and Valency
- Element X (Atomic Number 11)
- Electronic Configuration: 2, 8, 1
- Valency: 1 (It loses 1 electron to achieve stability)
- Element Y (Atomic Number 17)
- Electronic Configuration: 2, 8, 7
- Valency: 1 (It needs to gain 1 electron to complete its octet of 8 electrons)
- Element X (Atomic Number 11)
APPEARS IN
संबंधित प्रश्न
Write down the electronic configuration of the following elements from the given atomic numbers. Answer the following question with an explanation.
13Al, 14Si, 11Na, 12Mg, 16S
Which of the above elements has the highest metallic character?
Write down the electronic configuration of the following elements from the given atomic numbers. Answer the following question with explanation.
6C, 3Li, 9F, 7N, 8O Which of the above elements has the highest nonmetallic character?
An element has its electron configuration as 2,8,2. Now answer the following questions.
i. What is the atomic number of this element?
ii. What is the valency of this element?
iii. What is the group of this element?
iv. To which period does this element belong?
v. With which of the following elements would this element resemble?
`_7N , _4Be , _18Ar , _17CL`
Which among the following is the largest element?
Find the odd one out and give its explanation.
Find the odd one out and give its explanation.
Find the odd one out and give its explanation.
Answer the following question in one sentence.
Write the name of the noble gas having 2 electrons in its valence shell.
Match the columns.
| Column A | Column B |
| 1) Alkaline earth metals | a) Group 18 |
| 2) Alkali metals | b) Group 17 |
| 3) Halogen | c) Group 2 |
| 4) Noble gas | d) Group 1 |
| e) Group 14 |
Write the name.
Highest electropositive element
Write the name.
The group of elements having electronic configuration 2, 2.
Beryllium and calcium are alkaline earth metals.
Write an explanation.
Group
Write a scientific reason.
In group 2, beryllium and calcium elements, calcium is more electropositive element than beryllium.
Electronic configuration of element A is 2,8,1. Answer the following questions based on this information.
- What is the atomic number of element A?
- Find the group to which this element belongs.
Distinguish between:
Group - Period
Identify periods of elements and blocks of elements from given electronic configuration.
- 2, 8, 2
- 2, 8, 7
- 2, 1
Observe the periodic table given below and write the answers of the questions.
- Write the name and valencies of the elements in 3rd row.
- Classify the elements in this row as metal, nonmetal and metalloids.
- Which block does nonmetals belong to?
- Write name of any two metalloid elements.
An element has its electron configuration as 2, 8, 1. Now answer the following questions:
- What is the atomic number of this element?
- What is the group of this element?
- To which period does this element belong?
