Advertisements
Advertisements
प्रश्न
State the position of the following in the periodic table:
Halogens
Advertisements
उत्तर
Halogens are the elements in Group VII A of the periodic table.
APPEARS IN
संबंधित प्रश्न
Mark ‘T’ if the statement is true and ‘F’ if it is false.
Generally, non-metals react with acids. ( )
What happens when Dilute sulphuric acid is poured on a copper plate?
Write word equations of the reactions involved.
State one use of the following metal:
Iron
Give the composition of an alloy called solder. State its one property and one use.
How are the properties of an alloy different from those of the constituent elements?
Give reasons
Gold is mixed with copper and nickel.
Write scientific reason.
Sodium is always kept in kerosene.
Write scientific reason.
Pine oil is used in froth flotation.
Electronic configuration of metal A is 2,8,1. Electronic configuration of metal B is 2,8,8,2. Which of the above metals is more reactive? Explain with reason.
Which of the following two combinations are correct?
| Metal | Gas Evolved | |
| (i) | Copper | Yes |
| (ii) | Iron | Yes |
| (iii) | Magnesium | No |
| (iv) | Zinc | Yes |
