English
Maharashtra State BoardSSC (English Medium) 10th Standard

Write the name. Highest electropositive element - Science and Technology 1

Advertisements
Advertisements

Question

Write the name.

Highest electropositive element

One Word/Term Answer
Advertisements

Solution

Highest electropositive element- Francium (Fr)

shaalaa.com
  Is there an error in this question or solution?
Chapter 2: Periodic Classication of Element - Write the name

APPEARS IN

SCERT Maharashtra Science and Technology 1 [English] 10 Standard SSC
Chapter 2 Periodic Classication of Element
Write the name | Q 10

RELATED QUESTIONS

Write down the electronic configuration of the following elements from the given atomic numbers. Answer the following question with explanation.
 19K, 3Li, 11Na, 4Be Which of these atoms has smallest atomic radius?


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?


Write the scientific reason.

The third period contains only eight elements even though the electron capacity of the third shell is 18


An element has its electron configuration as 2, 8, 2. Now answer the following question.

What is the group of this element?


Which among the following is the largest element?


Find the odd one out and give its explanation.


Write the name of an element having electronic configuration 2,8,2.


Match the columns.

Column A Column B
1) s -block a) Lanthanides and actinides
2) p -block b) Group 3 to 12
3) d -block c) Group 1, 2
4) f -block d) Group 13 to 18
  e) Zero group

Match the columns.

Column A Column B
Electronic
configuration
Valency
1) 2, 2 a) 1
2) 2, 8, 1 b) 2
3) 2, 5 c) 3
  d) 5

Write the name.

The element having stable electron configuration from the third period.


Beryllium and calcium are alkaline earth metals.


Write scientific reason.

Boron and oxygen elements are placed in the second period in periodic table.


Distinguish between:

Group - Period


Write name of elements, symbol, atomic number, electronic configuration of second period in modern periodic table?


XY compound is formed by X (Atomic number 11) and Y (Atomic number 17), then answer the questions given below.

  1. Determine the position of the element X and Y periodic table.
  2. X and Y belongs to which of the following: metals, nonmetals or metalloids?
  3. From which block the elements X and Y are?
  4. Determine the electronic configuration and valency of these elements.

Observe the periodic table given below and write the answers of the questions.

  1. Write the name and valencies of the elements in 3rd row.
  2. Classify the elements in this row as metal, nonmetal and metalloids.
  3. Which block does nonmetals belong to?
  4. Write name of any two metalloid elements.

Make a chart which shows the name of the element, valency, atomic number, electronic configuration in the 2nd row of the modern periodic table and arrange these elements in ascending order of atomic mass.


An element has its electron configuration as 2, 8, 1. Now answer the following questions:

  1. What is the atomic number of this element?
  2. What is the group of this element?
  3. To which period does this element belong?

Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×