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प्रश्न
Write the names of the elements present in the following compound.
Common salt
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उत्तर
Sodium chloride
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संबंधित प्रश्न
Write the names of `"Ca"("NO"_3)_2` compounds :
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What is the atomic mass of the atom ?
A certain particle ‘X’ has 17 protons, 18 electrons and 20 neutrons.
What is the mass number of X?
What value has been given to the mass of this reference atom ?
An atom of element E contains 3 protons, 3 electrons and 4 neutrons :
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(b) What is its mass number?
(c) Write the electronic configuration of the element E.
(d) State whether element E is a metal or non-metal. Why?
(e) What type of ion, cation or anion, will be formed by an atom of element E? Why
(f) Write the symbol of the ion formed by an atom of element E.
(g) What could element X be?
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Electrical state
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Which will form positive ion?
Name the sub-atomic particles.
Define the following term with an example.
Compound
Define the following term with an example.
Non-metal
Write any two observations which support the fact that atoms are divisible.
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