Enter the full electron configuration for S2�. What is the atomic symbol for the noble gas that also has this electron configuration?

1. Electronic configuration of sulphide ion S²¯ (18) => 1s² 2s²2p⁶ 3s²3p⁶

2. Ar

Explanation:

1. S²¯ simply indicates that the sulphur atom (S) has gained two extra electrons.

Thus we shall write electron configuration of sulphur (S) and sulphide ion (S²¯) as follow:

The electronic configuration of S²¯

S (16) => 1s² 2s²2p⁶ 3s²3p⁴

S²¯ (18) => 1s² 2s²2p⁶ 3s²3p⁶

2. Determination of the noble gas element that has the same electronic configuration as S²¯.

This is illustrated below:

Sulphur (S) has 16 electrons while the sulphide ion (S²¯) has extra 2 electrons making it to have a total electron of 18. Observing the elements in the periodic table, only Argon has 18 electrons with electronic configuration as:

Ar (18) => 1s² 2s²2p⁶ 3s²3p⁶

Therefore, sulphide ion (S²¯) has the same electronic configuration as Argon (Ar).

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