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So for GCSE the key to this question is in the periodic table: Note drawing the atoms can be helpful to show the shells. 

F: 2,7

Cl: 2,8,7

Firstlet's look up Flurorine (symbol F in th...

Develop and express ideas in Spanish. Being able to have an everyday conversation . 

Mitosis is the division of diploid (full set of 46 chromosomes)  cells, to form two diploid daughter cells with an identical nature to their parent cells. This occurs throughout the body during cell repla...

A moment is the product of a force and its perpendicular distance from a pivot in a rotational system. Moment = F x D

dy/dx = 24e^6x - sin(x) + 6