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Ionisation energy is the energy required to remove one electron from an isolated gaseous atom (in its ground state). This generates a cation (ion with a positive charge).
Both Mg and Al are in period...

8x + 4y = 4,4y = 18 - 8x,2y = 2 - 4x,18y = 18 - 36x,6x - 18y = 16,18y = 6x - 16,6x - 16 = 18 - 36x,42x = 34,x = 34/42 = 17/21,18y = 90 - 36(17/21),18y = 426/7,y = 71/21

You can use the verb 'ser' when talking about something temporary eg. emotion: soy feliz - I am happy, physical characteristic: soy baja - I am small. Ser is also used with time eg. son las once - it's 11...

Getting a complicated problem of a mass being projected at a weird angle can seem daunting at first but these problems can be solved easily by breaking them down into two simpler problems.Using trigonomet...

Progressive taxation refers to a tax becoming progressively more substantial as an individuals income rises. This means as a person earns more income they are taxed more on the increase in income that the...