help with chemistry homework please?

I

*index*

New member
1)the elements of which of these groups on the periodic table are most resistant to forming compounds?
a.group 1
b.group 9
c.group 14
d.group 18

2)the bonding characteristics of oxygen are most similar to the bonding characteristics of ________
a.hydrogen
b.silicon
c.helium
d.sulfur

3)calcium ion plays an important role in the function of neuron in the brain. Elements that are chemically similar to calcium can interfere with the function of neurons. Which of the following is most likely to imitate calciums role in the function of neurons?
a.sodium
b.potassium
c.strontium
d.rubidium
thanks for explaining.i understand now.
 
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