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प्रश्न
Name the gas that.
Turns moist starch iodide paper blue black.
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उत्तर
Chlorine.
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संबंधित प्रश्न
An atom has 13 protons and 14 neutrons.
What is the atomic mass of the atom ?
Write the full form of IUPAC.
What value has been given to the mass of this reference atom ?
Which of the following statement is correct about the atom of an element ?
How many atoms are there in exactly 12 g of carbon-12 element ? (C = 12 u)
Compare:
Chlorine atom and chloride ion, with respect to
Atomic structure
Electrical state
The electronic structure [configuration] of fluorine can be written as 2, 7. In a similar way give the electronic configuration of aluminium
Project.
To have an idea of what atoms are, students can be asked to construct atoms using pipe cleaners (thin metal wires-electron shells), pompoms (balls-different colours for protons and neutrons) and beads (electrons). Students will love and enjoy putting them together and they look great hanging from the ceiling in the classroom.
______ is a substance that is made up of three oxygen atoms chemically combined.
Lead is also known as plumbum.
