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प्रश्न
Define: Ions
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उत्तर
An atom which becomes charged by losing or gaining electrons is called an ion.
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संबंधित प्रश्न
Tick the most appropriate answer.
Who discovered that radioactive rays are given out by uranium?
- Henri Becquerel
- Marie Curie
- Pierre Curie
- Schmidt
TRUE \ FALSE
Neils Bohr gave the theory to explain the arrangement of protons in an atom.
TRUE \ FALSE
Cathode rays are a stream of fast moving particles that travel in random directions.
Define: Relative atomic mass
What does an atom consist of ? Explain.
Name three non-metals/radicals which have valency -1, -2, and -3.
How did Neils Bohr visualise the atom ?
Define: An Atom:
Fill in the blank
If an atom gains an electron, it is called an _______
Fill in the blank
If an atom loses an electron, it acquires ______ a charge.
What are the building blocks of matter ?
How many times is a proton heavier than an electron?
Calculate the number of moles in 12.044 × 1025 atoms of phosphorus.
Electron, proton, neutron are the types of ______ in an atom.
The electron shell ______ is nearest to the nucleus.
Elements X and Y have 1 and 7 electrons in their outermost shell respectively.
Which element will gain electron?
A change in the physical state can be brought about
Does the solubility of a substance change with temperature? Explain with the help of an example.
The graphite refill used is pencil is made of element called ______.
