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प्रश्न
State what are radicals. Give the names of the radicals –
(a) NO3
(b) OH
(c) SO4
(d) CO3
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उत्तर
A radical is an atom or group of an atom of the same or different elements that behave in the manner of positive or negative ions.
(a) NO3 – nitrate
(b) OH – hydroxide
(c) SO4 – sulphate
(d) CO3 – carbonate
संबंधित प्रश्न
What is the difference between a pure substance and a mixture ?
Name: a non-metal which is lustrous
Name: the Hardest Naturally Occurring Substance
Give two examples of the following.
Non-metals which are solids
Answer the following question:
Why are copper and aluminium used to make electric wires?
Fill in the blank
_________ refers to the number of atoms in the molecule of an element
Complete the statement given below by filling in the blanks with the correct words.
From the elements – He, Br, Pt, and O; the element which is metallic is ____, an inert element is ____, forms a triatomic molecule is ____, is liquid at room temperature is_ ___.
Select the correct answer from A, B, C, D & E for the statement given below :
A non-metal that is lustrous.
Match the following:
| 1. | Co2 | a. | Robert Boyle |
| 2. | Sulfur | b. | Making mobile phones |
| 3. | Element | c. | triatomic molecule |
| 4. | Gallium | d. | Polyatomic molecule |
Name the element which is used for making computer chips.
