Advertisements
Advertisements
प्रश्न
Give reason for the following:
Metals form cations while non-metals form anions.
उत्तर
Metals lose or donate valence electrons and form cations [positive ions], whereas Non-Metals gain or accept valence electrons and form anions [negative ions].
APPEARS IN
संबंधित प्रश्न
Write any three differences between metals and non-metals with respect to their physical properties.
Which of the following statements is correct?
State why concentrated sulphuric acid is not used for drying ammonia gas
Name a non-metal having a very high melting point.
Fill in the blank:
A metal stored in kerosene oil is _______
Fill in the blank
A chemical compound that makes up the striking heads of match sticks is .........................
Write ‘true’ or ‘false’ for the following statement
Sodium can be cut with a knife.
What do you understand by the term metal?
State two important uses of following non-metal
Uses of oxygen
Name:
a non-metal with high m.p & b.p
Name:
a non metal which can form a positive ion
Give the effect of heat on metal oxides based on the activity series ?
With reference to the physical properties of metals and non-metals, state the following exception.
A non-metal which has low tensile strength
Complete the statement given below, by filling in the blank with the correct word:
A non-metal which allows an electric current to pass through it ______.
Complete the statement given below, by filling in the blank with the correct word:
A non-metal added to swimming pools to kill germs_____.
Select the appropriate option for the following statement:
The element placed in the extreme left of the Modern Periodic Table.
A non-metal A is an important constituent of our food and forms two oxides B and C. Oxide B is toxic whereas C causes global warming
- Identify A, B and C
- To which Group of Periodic Table does A belong?
Boojho has learnt that non-metals on beating with a hammer are generally broken into pieces. Which of the following is non-metal?
Non – metals are ______.
The metal is stored in kerosene ______.