English

Write the electron-dot structures for sodium, oxygen and magnesium.

Advertisements
Advertisements

Question

Write the electron-dot structures for sodium, oxygen and magnesium.

Answer in Brief
Advertisements

Solution

Sodium (2, 8, 1) \[\ce{\overset{\bullet}{Na}}\]
Oxygen  (2, 6)

\[\begin{array}{cc}
\ce{\text{}^\bullet_\bullet\overset{\bullet\bullet}{O}^\bullet_\bullet}
\end{array}\]

Magnesium (2, 8, 2)

\[\begin{array}{cc}
\ce{{Mg}^\bullet_\bullet}
\end{array}\]

shaalaa.com
  Is there an error in this question or solution?
Chapter 3: Metals and Non-metals - Intext Questions [Page 49]

APPEARS IN

NCERT Science [English] Class 10
Chapter 3 Metals and Non-metals
Intext Questions | Q 8. (i) | Page 49

RELATED QUESTIONS

Why are metals called electropositive elements whereas non-metals are called electronegative elements?


Name the metal which has been placed at the bottom of the reactivity series.


Which of the two metals is more reactive: copper or silver?


What will happen if a strip of zinc is immersed in a solution of copper sulphate?


How would you show that silver is chemically less reactive than copper?


Complete and balance the following equation:


Explain why, metals usually do not liberate hydrogen gas with dilute nitric acid.


Name two metals (other than zinc and iron) which can displace hydrogen from dilute hydrochloric acid?


What special name is given to substances like aluminium oxide.


What happens when calcium reacts with water? Write the chemical equation of the reaction of calcium with water.


Zinc oxide is a metal oxide. Which of the following term best describes the nature of zinc oxide:
(a) an acidic oxide
(b) a basic oxide
(c) an amphoteric oxide
(d) a neutral oxide


Which one of the following four metals would be displaced from the solution of its salt by the other three metals?
(a) Zn
(b) Ag
(c) Cu
(d) Mg


CuSO4(aq) + Fe(s) → FeSO4(aq) + Cu(s)

FeSO4(aq) + Zn(s) → ZnSO4(aq) + Fe(s)

On the basis of the above reactions, indicate which is most reactive and which is least reactive metal out of zinc, copper and iron.


If A, B, C, D, E, F, G, H, I, J and K represent metals in the decreasing order of their reactivity, which one of them is most likely to occur in a free state in nature?


Write the chemical equation of the above process.


Explain the following: 

Reactivity of aluminium decrease if it is dipped in nitric acid.


Arrange the following metals in the increasing order of their reactivities:

Copper, Zinc, Aluminium, and Iron


Write the chemical equation for the following reaction:
Calcium metal reacts with water.


Which property of metals is used for making bells and strings of musical instruments like Sitar and Violin?


Aluminium is used for making cooking utensils. Which of the following properties of aluminium are responsible for the same?

  1. Good thermal conductivity
  2. Good electrical conductivity
  3. Ductility
  4.  High melting point

Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×