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प्रश्न
Give the following a suitable word/phrase.
The electrons present in the outermost shell.
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उत्तर
This outermost shell is known as the valence shell, and the electrons found in it are called valence electrons.
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संबंधित प्रश्न
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The electrons revolving in shells close to the nucleus are called ................... electrons.
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In an atom, the last shell containing electrons is called its..................shell.
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The γ-rays are............................ radiations, like light.
Draw the electronic configuration of the following elements clearly stating the number of neutrons and protons in their nucleus.
a. Beryllium b. Silicon
c. Chlorine d. Aluminium
e. Nitrogen
Compare an electron, a proton and a neutron in respect of their relative masses and charges.
State the location of electrons, protons and neutrons in an atom.
Define the term Mass number.
Define the term Valence shell.
Select the correct answer from the choice in the bracket to complete the sentence:
An element ‘X’ has six electrons in its outer or valence shell. Its valency is __________.
Select the correct answer from the choice in the bracket to complete the sentence:
A ________ is a sub-atomic particle with no charge and unit mass.
