2H,0 o,
2H,
rogen perode
oxygen
This chemical reaction shows that two molecules of hydrogen peroxide (H 0.) break
apart to form two molecules of water (H.0) and one molecule of oxygen (0,1
How does the arrangement of atoms and bonds
change?

Due to removal of oxygen and number of hydrogen bonds.

Explanation:

The arrangement of atoms and bonds change due to removal of oxygen molecule from hydrogen peroxide forming water which has one oxygen less than hydrogen peroxide. In hydrogen peroxide, four identical hydrogen bonds are formed with Oxygen while on the other hand, in water, two atoms of hydrogen attached by covalent bonds to the same atom of oxygen.

2b2t

explanation:

2b2t

explanation:

let the different atoms be x and y. each with four protons and same mass will be represented as follows.

mass number is number of protons + number of neutrons.

            and  

since, it is given that one has a negative charge while the other is neutral. therefore, there will be increase in number of protons and the atom will be represented as follows.

according to periodic table, mass number of beryllium is 9 and it has atomic number 4 so, the atoms will be and .  

the protons and neutrons will be located inside the nucleus whereas the electrons will be revolving around the nucleus.