Answer:
The element with electron configuration 1s² 2s² 2p⁶ will most likely not........
Explanation:
Answer:
9Be
4
Explanation:
Atomic number = (3+2)-1= 4
Mass number = (6+4)-1 =9
The heated gas particles are moving around more and have more energy so they hit the walls of the container more often and with more force.
Density= 1.2092 because density = mass/volume
Particle Charge
Proton +1
Neutron. 0
Electron. -1
Chemical properties of elements are primarily determined by the electrons/protons but not by the neutrons. Therefore, the Isotopes of the same element have similar chemical behaviour.