Answer: 2, 4
Explanation:
Carbon varies, so it can have either 2 or 4 electrons
True ! search it up on safari and it tells you that it’s true
Answer:
The s stands for the phase of that element or compound. The phase solid is represented by (s). In this problem it is saying solid sodium (Na) is reacting with Bromine (Br) gas to form sodium bromide.
Explanation:
Answer:
Here's what I get.
Explanation:
William Crookes
Crookes found that when he passed a high voltage through an evacuated glass tube, the glass at the at the anode end began to glow.
He designed the famous Maltese cross Crookes tube, in which the cross produced a shadow. This showed that the mysterious rays travelled in straight lines. He also showed that the rays could be bent by a magnetic field.
Later researchers
At the time, atoms were the smallest particles known, and scientists thought they were indivisible. What carried the current was a mystery.
Crooke believed the “cathode rays” consisted electrically charged atoms. Others thought they were some new form of electromagnetic radiation.
J. J Thomson
They were all wrong.
J.J. Thomson extended Crookes’ work by making quantitative measurements on the particles in the rays.
By using electric and magnetic fields, he calculated their charge-to-mass (e/m) ratio and showed that their mass was 1/1800 times the mass of a hydrogen atom,
Therefore, these particles were not atoms. Thomson had discovered the first subatomic particle, the electron, and this led to his famous “plum pudding “ model of the atom.
Forces can be added only when they both are going in the same direction as 2n +2n = 4n of force in the same direction if they are 2 facing forces they would <span>have had to be subtracted, which ever force is greater that will be the momentum of the force.
Hope this helps.</span>
