Answer:
found this hope it helps
Explanation:
Gas particles are spread farther apart and move faster than solids or liquids. ... The average speeds and kinetic energies of gas particles increase with an increase in temperature and decrease with a decrease in temperature.
Answer: 3d
Explantion:
1) Period 4 contains the elements with atomic numbers 19 through 36.
2) The elements with atomic numbers 19 (K) and 20 (Ca) fill the orbital 4s.
3) After that, as Aufbau's rule may help you to remember, the energy of the orbitals 3d is lower than the energy of the orbtitals 4p. So, the element 21 (Sc) start fillind the orbital 3d.
There are ten 3d orbitals, so the elements 21 through 30 fill the 3d orbitals.
Those elements, called transition metals are: Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, and Zn.
When the 3d orbitals are full, the next elements in the same period 4, fill the six 4p orbitals.
Your answer is A my friend as the atomic number of an atom is determined by the number of protons
B. No since rusting is a chemical change it does not follow the law of conservation of mass.
