HELP ME PLS Find the valence electrons for the following elements:
1. Gallium
2. Beryllium
3. Cesium
4. Rubidium
5. Calcium
6. Mg
7. K
8. Ba
9. Sr
10. AI
11. Radon
12.1
13. Sulfur
14. O
15. Argon
16. Phosphorous
17. Se
18. Bromine
19. Fluorine
20. CI

Select the correct answer from each drop-down menu.describe what happens to a carbon-11 atom when it undergoes positron emission.the decay of a carbon-11 atom _1_, and this causes it to emit _2_.options for 1: > changes a neutron into a proton> changes a proton into a neutron> is hit with a neutron> reconfigures its protons and neutronsoptions for 2: > a negatively charged electron-sized particle> a positively charged election-sized particle> two atoms and several neutrons> two neutrons and two protons

What is the percentage of hydrogen in c2h4

Which substance—wood or silver—is the better thermal conductor? a thermal conductor is a material that requires very little heat energy to change its temperature. explain your answer.