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प्रश्न
Name the following:
The shell closest to the nucleus of an atom
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उत्तर १
K
उत्तर २
The shell nearest to the nucleus i.e. shell 1 or K can have a maximum of 2 electrons. It has a minimum amount of energy
संबंधित प्रश्न
Among the following compounds identify the compound that has all three bonds (ionic, covalent and coordinate bond).
A Compound 'X' consists of only molecules. Hence 'X' will have
State the type of bonding in the following molecule.
Calcium oxide
State the following is a reduction reaction or oxidation reaction.
\[\ce{Pb -> Pb^2+ + 2e-}\]
Define the term:
orbit
Name the following:
Two atoms having the same number of protons and electrons but different number of neutrons.
Potassium (at No.19) and chlorine (at No.17) react to form a compound. Explain the formation of the compound on the basis of reducing agent.
\[\ce{^24_12Mg}\] and \[\ce{^26_12Mg}\] are symbols of isotopes of magnesium.
(a) Compare the atoms of these isotopes with respect to :
i. the composition of their nuclei
ii. their electronic configurations
(b) Give reasons why the two isotopes of magnesium have different mass numbers.
State the type of bonding in the following molecules.
Water,
Elements with stable electronic configurations have eight electrons in their valence shell. They are ______.
