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Many elements readily form ions because their electron configurations are more stable if electrons are added or removed, usually in order to ensure that the outermost shell is a full octet. An ionic compo...

A beanpole family is a multi-generational extended family, this means that there are many different generations within the family that have few siblings in each generation. 

One weakness is that little research has been done to understand the central executive, for example its capactity is still unknown. Furthermore, It cannot be falsified.

One strength is that there i...

it is the change in speed over time. So  a = v-u / t

mountain = جبل

football = كرة قدم

beach = شاطئ