Lets start over and go through the options from the starting.
Option A. they are all halogens.
oxygen is not a fluorine is halogen, chlorine is halogen but oxygen does not belong to halogen. Oxygen belongs to <span>chalcogen group.
So it's not option A.
Option B. they react easily with metals.
These metal are considered the most reactive metals in the period table.
So we can say that this can be true.
Option C. they are similar to noble gases.
We know that these element are not similar to noble gases. These elements are not in the gaseous state when formed.
So it's not option C.
Option D. they are all non-metals.
We all know that these elements are metal. So we can take it out immediately.
</span><span>So it can't be even D.
So, our correct answer will be B.
Hope this helped.. :)
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6:30
1 hour=60 minutes
60x6=360+30=390
60x3=180+40=220
390-220=170
170 divided by 60=2.83
2x60=120
170-120=50
2:50
Check:
2:50+60=3:50+60=4:50+60=5:50+40=6:30
60+60+60+40=220
Answer: To roast a food item in the oven that takes 3 hours and 40 minutes to roast and have it done and served by 6:30 p.m, you would have to start at 2:50 p.m.
Answer: 2:50 p.m.
Yes because pressure relates to the force of the blood pumping in your body. And if you have high heart rate it means that your heart it trying to get blood through your body but it may have had an obstacle.
Unless high heart rate is caused my movement. In that can we is because movement quickens your breath with causes your heart to pump faster.