Answer: 27 grams of Be
Explanation: Berylium has a molar mass of 9.0 grams/mole
(9.0 grams/mole)*(3 moles Be) = 27 grams Be
To create the Lewis structure we need to take into account the octet rule: atoms tend to gain, lose or share electrons to complete their valence shell with 8 electrons.
C belongs to Group 4A in the periodic table so it has 4 valence electrons. It needs to share 4 pairs of electrons to complete the octet.
F belongs to Group 7A in the periodic table so it has 7 valence electrons. Each F needs to share 1 pair of electrons to complete the octet.
As a consequence, in CF₄, C will form a single bond with each F and all the octets will be complete.
Its B- a mixture.
Because I don't think you could separate and atom by distillation or filtration.
Actually I don't think you could separate an element by them.
I'm pretty sure compound can't be separated by them either.
Answer:
Metre
Explanation:
the SI unit of length is <em>Me</em><em>tre</em>
D. toxic chemical used to control pest population.