Which is true of solids? select all that apply. PLZZZ HELP A. take the shape of their container

B. molecules are close together

C. molecules vibrate in place

D. molecules are spread far apart and move quickly

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.  

2b2t

explanation:

2b2t

answer; the numbers of valence electrons in the acetic acid molecule (ch3co2h) is 24;