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प्रश्न
What are the valence electrons?
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उत्तर
Electrons present in the outermost shell of the atom of an element are called valence electrons.
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संबंधित प्रश्न
Explain the following.
13Al is a metal, 14Si is a metalloid and 15P is a nonmetal.
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Explain electronegativity and electron gain enthalpy. Which of the two can be measured experimentally?
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Answer the following question.
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With the help of a diagram answer the questions are given below:
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Define ionization enthalpy.
How does ionization enthalpy vary down the group and across a period?
How the atomic size vary in a group and across a period? Explain with suitable example.
Give reason.
Alkali metals have low ionization enthalpies.
