In the Modern Periodic Table, Which Are the Metals Among the First Ten Elements? - Science

Advertisements
Advertisements

In the Modern Periodic Table, which are the metals among the first ten elements?

Advertisements

Solution

Among the first ten elements, lithium (Li) and beryllium (Be) are metals.

  Is there an error in this question or solution?
Chapter 5: Periodic Classification Of Elements - Exercise 1 [Page 282]

APPEARS IN

Lakhmir Singh Class 10 Chemistry (Science)
Chapter 5 Periodic Classification Of Elements
Exercise 1 | Q 17.1 | Page 282
NCERT Science Class 10
Chapter 5 Periodic Classification of Elements
Intext Questions | Q 5 | Page 90

Video TutorialsVIEW ALL [2]

RELATED QUESTIONS

Fill in the blank:

The modern periodic table consists of ……………. periods.


Write the merits of the modern periodic table over Mendeleev’s Periodic table


 What is meant by a group, in a periodic table?


What is meant by a period, in a periodic table?


 Explain why All the elements of a group have similar chemical properties.


 State how the valency of elements varies in a group of the periodic table?


What is the main characteristic of the last elements in the periods of the periodic table? What is the general name of such elements?


Give the group number of following elements present in periodic table


How does the electronic configuration in atoms change

(i) in a period from left to right?


How does the electronic configuration in atoms change

(ii) in a group top to bottom?


Name two elements in each case: 

Inert gas


Name two elements in each case: 

Transition element


Name two elements in each case: 

Actinides


State its position in the periodic table?


Answer the following in respect of element `31/15 P `

To which group and period does it belong?


Arrange the elements of second and third periods in increasing order of their atomic size.


Fill in the blank:

The horizontal rows in the periodic table are called _____________.


An element barium has the atomic number 56. Look up its position in the periodic table and answer the following questions.

Is it larger or smaller than caesium (Cs)?


Write a short note.

Position of isotopes in the Mendeleev’s and the modern periodic table.


What would be the correct order if Zn, Fe, Al and Cu are arranged in increasing order of reactivity?


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


What is the number of elements in the 1st period?


Name and state the following with reference to the elements of the first three periods of the periodic table.

A covalent compound formed by an element in period 2 and a halogen.


Write down the word that will correctly complete the following sentence:

The horizontal rows in a periodic table are called _____.


An element A has 2 electrons in its fourth shell. State:

its electronic configuration


Two elements P and Q belong to the same period of the modern periodic table and are in group 1 and group 2, respectively. Compare the following characteristics in the tabular form.

  1. Number of electrons in their atoms
  2. Their tendency to lose electrons
  3. Their metallic characters
  4. Formation of their oxides
  5. Formulae of their chlorides

Name the cation and the anion in the salt – calcium sulphate


Give the symbol and valency of the following element and radical.

Hydrogen


Give the symbol and valency of the following element and radical.

Magnesium


Give the symbol and valency of the following element and radical.

Nitrogen [Nitride]


Give the symbol and valency of the following element and radical.

Bisulphite


Give the symbol and valency of the following element and radical.

Sulphate


Give the chemical formula of sodium sulphite


Give the chemical formula of ammonium sulphate


Name the following:

The group of the Modern Periodic Table to which calcium [Ca2+] belongs.


State the number of elements in Period 1 of the Periodic Table.


State the number of elements in Period 3 of the Periodic Table.


How were elements arranged in the long form of the periodic table or the Modern Periodic Table?


What are the periods in a periodic table?


The groups 1 and 2 constitute the _______ block.


Which of the following statements about the Modern periodic table is correct?


The d-block elements are called as _______ elements.


Mendeleev's periodic table : atomic mass : : Modern periodic table : _______


Group 1 and 2 : s block : : group 13 and 18 : _______


Group 13 to 18 : p block : : _______ : d block


Find the odd one out and give its explanation.


The modern periodic table is divided into which blocks?


The modern periodic table has 1 to 7 periods.


p-block is composed of groups 1 and 2.


To the left of the zig-zag line in the periodic table are the metal elements.


Write an Explanation.

Period


Write scientific reason.

There was ambiguity about the correct position of hydrogen in Mendeleev’s periodic table.


Complete the following flow chart.


Distinguish between:

s-block - p-block


An X element with atomic number 11 and Y element with atomic number 13 belongs to the third period in the modern periodic table. With this information, give the answers of the below questions.

  1. Which element has more metallic character from these two elements?
  2. What is the valency of each X and Y elements?
  3. Atom size of Y element is smaller than atom size of X element. Explain.

Position of A, B and C three elements is given in the table from the modern periodic table. Answer the following questions.

Periods Group 2 Group 17
2 ----- A
3 B -----
4 ----- C
  1. What is A element metal or nonmetal?
  2. Which is the outermost orbit of element B?
  3. Identify C element and it's physical state.

Explain structure of modern periodic table in short.


Noble gases belong to______ group of the periodic table.


State whether true or false. If false, correct the statement.

Lanthanides and actinides are kept at the bottom of the periodic table because they resemble each other but they do not resemble with any other group elements.


What are groups and periods in the modern periodic table?


______ is the longest period in the periodical table.


______ forms the basis of the modern periodic table.


The scientist who propounded the modern periodic law is ______.


______ and ______ are called inner transition elements.


How does the property vary in periods and in groups?


The arrangement of elements in the Modem Periodic Table is based on their ______ 


Which of the following statements about the Modern Periodic Table is correct:


Which one of the following elements exhibit maximum number of valence electrons?


Which of the following elements would lose an electron easily?


Noble gases are placed in the ______ group in the modern periodic table.


Group 16 elements are collectively called as ______.


The maximum number of electrons that can be accommodated in s, p,d, and f subshells are ______.


______ group elements are called alkaline earth metals.


Spot the error:

The elements of group 13 are called the carbon family.


An element has the atomic number 12.

  1. Write the electric configuration.
  2. To which group and period does it belong.

Explain the position of hydrogen in the periodic table.


A part of modern periodic table is given below. On its basis, answer the following questions:

Group No. → 1 2 13 14 15 16 17 18
Period ↓
2   A       B    
3 E     D     F C

Which of the element is a Metalloid?


An element belonging to 3d series of modern periodic table has spin magnetic moment = 5.92 B.M. in +3 oxidation state. The atomic number of elements are ______.


Define periods of modern periodic table.


Share
Notifications



      Forgot password?
Use app×