Question

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Answer 1

Explanation:

ELECTRON DOT STRUCTURES are also known as Lewis structures. In this, electrons are denoted by dots. These dots represent the number of electrons present in the outer most shell of an element.

$\tt F_2$ contains only fluorine atoms. The number of valence electrons in fluorine is 7.

• Electron dot structure of $F_2$ is in attachment 1

The chemical formula of propanone is $\sf CH_3COCH_3$. The number of valence electrons in carbon, hydrogen and oxygen are 4, 1 & 6

• Electron dot structure of propanone in attachment 2