Answer:
First one: group
Second one: period
Third one: number of valence electrons
Last one: increases
I think O and Cl will form covalent bonds since they are both non-metals and don't have a large enough difference in electronegativities to create an ionic bond.
I hope this helps. Let me know if anything is unclear.
its density should stay the same as it is a characteristic property and nothing was added sooo
Answer:
15
Explanation:
because since the outer shell has 5 electron then add 5 and 10 to get 15
Answer:
When the ambulance is coming towardss you the waves are smushed together and sound higher pitched but then it passes you and when tracveling away the waves are scretched out so the whee whoo sounds lower and that is because of the doppler effect