It would be water. Since the body is 60-75% water, it is important in chemical reactions within the body.
Answer:
The answer is: D
Explanation:
A. They have the same number of electron energy shells. Is false, all the elements are in different periods so, they have different number of lectron energy shells.
B. They are all Halogens. No, is wrong, halogens are F, Cl ,Br
C. They have the same number of electrons. is wrong, if they had the same number of electrons they must be they same element and they aren't the same.
D. They are all Noble gases. Yes, it's true they are noble gases, they are the first group in the periodic table from the right.
Answer:
8
Explanation:
The atomic number refers to the number which identifies the element, which is the proton number.
By adding together the number of protons and neutrons and multiplying by 1 amu, you can calculate the mass of the atom.
