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# n a galaxy far, far away, the elements Medronium (Me) and Tachiogen (Ta) are both in the group 7A of the periodic table ...

In a galaxy far, far away, the elements Medronium (Me) and Tachiogen (Ta) are both in the group 7A of the periodic table and form the following anion: MeTa4 - In the space below, draw the most stable Lewis structures for this molecule, then draw its 3D shape and fill the summary table provided. 10.  In the space below, draw the valence bond theory structure for the compound Si2F4. Show the steps involved (Lewis structure, atom hybridization…) for full (or part…) marks. Summary table for MeTa4 - : Total number of valence electrons involved: ______ EG geometry: _________________ Molecular shape: __________________ Bond angle(s): _____________ Is the molecule polar or nonpolar? (Note: Ta is more electronegative than Me)

In a galaxy far, far away, the elements Medronium (Me) and Tachiogen (Ta) are both in the Group 7A of the periodic table and form the following anion.

3-D shape;

Lewis Strucutre

• Element of 7A has & balance electron in their outermost shell

•    Total balance electon = 7+7$×$4+1

= 36 elctrons

• EG : Octahedal

• MS : Squre planner

• Bond angle : 90$°$

• Polarity : Non-polar
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