Answer:
2g
Explanation:
2 half-lives will pass. Therefore the amount will be quartered into 2g.
Answer:
By visiting other households with cats.
Explanation:
This will give Brian a variety of other houses and determine if it is truly cats or just alleries from other items. This is the most direct way to get Brian the answer he is looking for.
I think the answer is 1s²2s²2p⁶. Since neon has an atomic number of 10, we know that it needs to have 10 electrons and since it is in the second row it cannot have any d electrons which makes the first option incorrect. The second option is incorrect because the 2s⁴ can't exist since s orbitals can only hold 2 electrons. The fourth option cannot be right because it again neon cannot have d electrons due to it being in the second row.
I hope this helps. Let me know if anything is unclear.
4Na + O2 - 2Na2O
Moles= 4:1 ratio
3.82 x 4 = 15.28 moles
Neutron = No charge / Mass of 1
Proton = Postive charge Mass of 1
Electron = Negative charge No mass
