Answer:
ne=1s2,2s2,2p6,
ar=1s2,2s2,2p6,3s2,3p6
ca=1s2,2s2,2p6,3s2,3p6,4s2
For example, say you are at home and a lightbulb goes out. Noticing that the lightbulb is out is an observation. You would then naturally question, “Why is the lightbulb out?” and come up with possible guesses, or hypotheses.
Depending on the forces (negative or positive), if opposite, they will attract, if the same, they will repel
Answer:
D. They have the same number of protons as electrons.
Explanation:
Protons are found in the nucleus of the atom and have a positive charge while electrons orbit around the nucleus and have a negative charge. Usually, in a neutral atom of an element, the number of protons is equal to the number of electrons. This is why the atom has no charge because the positive and negative charges cancel out. When an atom loses an electron its charge turns positive while when it gains an electron its charge turns negative.