When reading the periodic table, the atomic mass of magnesium is 24.31. What does this mean? A) Mg atoms have an average mass of 24.31 amu

B) All Mg atoms have a mass number of 24.

C) Mg has 24.31 protons and neutrons.

D) All Mg atoms have a mass of 24.31 amu.

by cartels in other countries, shipped by air, mail, or land. i cant really see your answer choices : /

1. a)c-14 has two more protons

2. d)they have different numbers of protons, neutrons, and valence electrons; they are all gases at room temperature.

3. c) iron and nickel.

c is having 4 valence electrons and is bonded to three hydrogens and one sulphur atom, therefore, the number of bond pair is equal to four. as all the valence electrons are used in forming the bonds so, there is no lone pair left on carbon.

s is having 6 valence electrons and is bonded to one other sulfur atom and one carbon atom, therefore, the number of bond pair is equal to 2. as only two valence electrons are used in forming the bonds so, four electrons are left. therefore, two lone pairs are present on s.