Which species contains the lowest number of electrons

The element that  contain the lowest  number of electrons   is   Hydrogen

explanation

Hydrogen  is in atomic  number  one in  periodic table.   hydrogen been  in atomic number one   this implies that   it has the lowest  number of  electron  since it has  an only  one electrons.

Protium  the most common isotope of hydrogen   consist  only  one  electron.

The answers is bad germs in their

Mass is the amount of matter in an object.  weight is the measurement of the pull of gravity on an object.  say for example, you travel to the moon which has a different gravitational field compared to the gravitational field of earth. (gravitational fields: earth = 1, moon = 0.165)  now when you are on the moon, the pull of gravity on you is different than on the earth. and as weight is the measurement of the pull of gravity on an object, that means yes, your weight can and will change on the moon.  however, on the moon, on earth or even on jupiter, the amount of mass inside of you remains the same. meaning your physical mass remains constant.  in conclusion it is possible for your weight to change as your mass remains constant.