Use a periodic table to complete the table below:

proton number of hydrogen :1

proton number of calcium : 20

number of electrons for fluorine : 9

number of electrons for iodine : 53

number of neutron hydrogen :0

number of neutron iodine : 74

number of neutron gold(Aurum) :118

Explanation:

to get the number of neutron by number of nukleon minus the number of proton..

gold is aurum

the number of nukleon u can get at the periodic table .. by looking at the biggest number.. thats all.. i hope u understanding my explanation :'D hhihi see ya

since the atomic number is the number of protons in the nucleus, as we move to the left on the periodic table, the electrostatic pull between the nucleus and the valence electron shell decreases. as we move down a group (vertical column), the valence shell energy level gets further and further from the nucleus.

the answer is b because, investigating whether another species of moth also drinks tears might be interesting, but it would not directly explain why this species of moth does.

to explain why this species of moth drinks tears, the scientist could ask: "what nutrients that moths need are in elephant tears? "

the scientist could experiment with moth repellent or oter ways to keep the moths away, but that would not answer his original question.