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प्रश्न
Give the symbols of: Carbon, calcium, copper, chlorine, cobalt, argon.
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उत्तर
Carbon is C, Chlorine is Cl, Calcium is Ca, Cobalt is Co Copper is Cu, Argon is Ar.
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संबंधित प्रश्न
Define: Elements
Name: the Hardest Naturally Occurring Substance
Answer the following question:
What do you understand by the statement: ‘metals are ductile and malleable’?
Find the atomicity of the Following molecule:
Carbon Monoxide
Complete the statement with the correct words.
__________ are chemicals formed on reaction of a base with an _____ giving salt and water.
Explain the difference between Atoms and molecules.
Elements are broadly classified into metals and non-metals. State six general differences in the physical properties of metals and non-metals. State two metals and two non-metals which contradict with the general physical properties – giving reasons. State one difference in property between metalloids and noble gases.
State true of false. If false, give the correct statement.
Two different elements may have similar atoms.
Differentiate between elements and compounds.
Non-metals are usually poor conductors of heat and electricity. They are non-lustrous, non-sonorous, non-malleable and are coloured.
Name a non-metal other than carbon that shows allotropy.
