Constructing a model of an electric drcuit. What you need: 2 batteries 1.5 v, electrical tape, socker, 1 flashlight bulb
1.5 V, two 25 cm, insulated wire with end scrapped, 1/2
size illustration board, scissors
What to do
1. On the illustration board, arrange a circuit to light a bulb,
2. Screw the bulb into a socker, Connect a copper wire to each of the socket terminals,
3. Connect a piece of copper wire to the switch, Connect the loose end of the wire to the negative
battery
4, Connect one end of the copper wire by winding it (which is attached to the socker) to the posit
battery, Connect the other end of the socker to the switch. Did the bulb light?
5. Fasten the wires, batteries, and bulb into the illustration using the electrical to secure the din
6. Close the open parts of the switch, What happened to the bulb?Why?
7 Switch it off. What happened to the bulb?​

since the atomic number is the number of protons in the nucleus, as we move to the left on the periodic table, the electrostatic pull between the nucleus and the valence electron shell decreases. as we move down a group (vertical column), the valence shell energy level gets further and further from the nucleus.

it should be all of them because it asks if you included all of those in your answer

explanation:

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.  

i think its 100.

hope this !