Which of the following has six electrons in its valence shell? oxygen nitrogen sodium neon

Oxygen has six electrons in its valence shell. It belongs to the group 6 elements in the periodic table. It means that it needs two electrons to be gained in order for it to follow the octet rule.

Oxygen has six valence electron in its valence shell.

Explanation:

Valence shell : Outermost shell of an atom containing the valence electrons.

Valence electrons: Electrons in the outermost shell is known as valence electrons.

Oxygen has atomic number of 8.

From the electronic configuration of the oxygen we can see that there are six valence electrons present in its valence shell.

in the given question, the partial pressure is calculated by using the ideal gas equation, that is, pv = nrt

here, p is pressure, v is volume = 25 l, n is number of moles = 0.0104 moles, r is gas constant = -0.0821 l.atm / mol.k

t is temperature = 273 k

p = nrt / v

p = (0.0104 mol × 0.0821 l.atm / mol.k × 273 k) / 25 l

= 0.0093 atm

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