PLEASE HELP ME IM IN DIRE NEED OF ASSISTANCE. Describe the properties of alkaline earth metals. Based on their electronic arrangement, explain whether they can exist alone in nature.

Alkaline Earth Metals are the 2nd Group of Metals on the Periodic Table.

Explanation:

Characteristics:

- Shiny

- Reactive

- Low melting and boiling points

- Low density

- 2 valence electrons

Alkaline Earth Metals cannot be found alone in nature since they are highly reactable (If you've ever thrown barium into a lake, it would cause a massive explosion).

when the volume of gas is   changed from   717.73 ml   to 852 ml   the temperature will   change   from 315   c to 452   c

    calculation

this is calculated using the charles law formula

that is,   v1/t1 = v2/t2

          v1=?

        t1 = 315 c   into   kelvin = 315 +273 = 588 k

        v2 = 852   ml

        t2 = 425c + 273 =698 k

make v1   the subject of the formula ( by   multiplying both side by t1)

  v1=( v2 xt1) / t2

v1= (852 ml   x 588 k)/ 698 k= 717.73 ml