English

Fill in the Blank - Chemistry

Advertisements
Advertisements

Question

Fill in the blank 
Most electropositive elements belong to ______ group.

Fill in the Blanks

Solution

Most electropositive elements belong to First group.

shaalaa.com
  Is there an error in this question or solution?
Chapter 1: Periodic Properties And Variation Of Properties: Physical And Chemical - Exercise 2 [Page 17]

APPEARS IN

Frank Chemistry - Part 2 [English] Class 10 ICSE
Chapter 1 Periodic Properties And Variation Of Properties: Physical And Chemical
Exercise 2 | Q 3.02 | Page 17

RELATED QUESTIONS

The electrons in the atoms of four elements A, B, C and D are distributed in three shells having 1, 3, 5 and 7 electrons in the outermost shell respectively. State the period in which these elements can be placed in  the modern periodic table. Write the electronic configuration of the atoms of A and D and the molecular formula of the compound formed when A and D combine.


Name the element which is in seventeenth group and second period.


Rewrite the following statement after correction, if necessary:

The metallic character of elements in a period increases gradually on moving from left to right.


The atomic radii of three elements X, Y and Z of a period of the periodic table are 186 pm; 104 pm and 143 pm respectively. Giving a reason, arrange these elements in the increasing order of atomic numbers in the period.

 


Complete the following sentences. 

The properties of the elements are a periodic function of their …………… (atomic number, mass number, reative atomic mass).


Four elements P, Q, R and S belong to the third period of the Modern Periodic Table and have respectively 1, 3, 5 and 7 electrons in their outermost shells. Write the electronic configurations of Q and R and determine their valences. Write the molecular formula of the compound formed when P and S combine.

 


How many groups and periods are there in the modern periodic table?


Select the correct answer
Number of shells in potassium are


Choose the most appropriate answer from the following list of oxides which fit the description.

An amphoteric oxide.


Name or state following with reference to the element of the first three periods of the periodic table.

A metal in period 3 having valency 3.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×