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प्रश्न
Fill in the following blank with suitable word:
Calcium is a ................. reactive metal than sodium.
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उत्तर
Calcium is a less reactive metal than sodium.
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संबंधित प्रश्न
Metal A has electronic configuration (2, 8, 1) and metal B has (2, 8, 8, 2). Which is more reactive? Why? Identify these metals.
Name the following:
Metals which forms an amphoteric oxide.
Which gas is produced when dilute hydrochloric acid is added to a reactive metal?
Write the electron-dot structures for sodium, oxygen and magnesium.
Food cans are coated with tin and not with zinc because ______.
Differentiate between metal and non-metal on the basis of their chemical properties.
What changes in the colour of iron nails and copper sulphate solution do you observe after keeping the iron nails dipped in copper sulphate solution for about 30 minutes?
Name the metal which has been placed at the bottom of the reactivity series.
Fill in the following blank with suitable word:
Magnesium liberates ............... gas on reacting with hot boiling water.
Which of the following elements would yield an acidic oxide.
Na, S, C, K, H
How do metals react with hydrogen? Explain with an example.
Write the equation for the reaction of Iron with dilute hydrochloric acid.
Name the products formed. Also indicate the physical states of all the substances involved.
An element E forms an oxide E2O. An aqueous solution of E2O turns red litmus paper blue.
(a) What is the nature of the oxide E2O?
(b) State whether element E is a metal or a non-metal.
(c) Give one example of an element like E.
When calcium metal is added to water, the gas evolved does not catch fire but the same gas evolved on adding sodium metal to water catches fire. Why is it so?
Write the name and formula of a molecule made up of three atoms of oxygen.
Calcium floats over water during the reaction with water. Give reason.
Metals are generally hard. Which of the following metals is an exception and can be cut with a knife?
Metals are generally solid. Which of the following metals is in the liquid state at room temperature?
