If $$R=\left\{\left(x,y\right):y=2x\right\}$$ is a relation in $$A=\left\{1,2,3,4,6,7,8\right\}$$ then write all the elements of $$R$$

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Subjective Type
How many valence electrons are in a silicon atom?
Solution
Silicon has four valence electrons.
Explanation:
Silicon is element $$14$$ in the Periodic Table
It has two electrons in its first shell, eight electrons in the second shell, and four electrons in the third shell.
Since the electrons in the third shell are the outermost electrons, silicon has four valence electrons.
SIMILAR QUESTIONS
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