MCQ
If the atomic number of element $X$ is $7,$ the best electron dot symbol for the element is
- A$X\,\,.$
- B$.\,\,X\,\,.$
- ✓$.\,\,\mathop X\limits_.^. \,\,:$
- D$:\,\,\mathop X\limits_{.\,.}^{.\,.} \,\,.$
✓
Answer
Correct option: C.
$.\,\,\mathop X\limits_.^. \,\,:$
(c)Element $‘X’$ has atomic no. $7$ so its electronic configuration will be $2, 5.$ So its electron dot symbol would be $:\mathop {\mathop X\limits^. }\limits_. .$
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