From which orbital do two electrons get lost out of Mg atom to form an octet? О За O 3s 3p

Draw the Lewis electron dot structures of the following chemical species. In each case you must say whether or not the central atom obeys the Octet Rule. Co3^2-and BF3

In which of the following pairs is the first element expected to have a higher electronegativity than the second? O 0, P O Cs, Rb O I, Br Al, P

Which one of the following molecules or ions has one lone pa ir on the central atom? (If there are 3 elements in the molecule, the first atom is the central atom and the others are bonded to it). AsCl 6 - BrO 4 - AsF 3 IO 2 - ClF 3

Which of the following pairs of atoms would most likely form a polar covalent bond? S and O Ag and I C and H N and N

Which of the following atom pairs form the most polar bond? O C and O C and CI S and O N and N N and B

Atoms which form covalent bonds not have any valence electrons. O False O True

In the correct Lewis Structure for SF4, how many lonelsairs (unshared pairs) are on the central atom? 07 6. O 3 O 5 O2 O 1

In the molecule PCl5, what is the formal charge on the P atom?   +2   +1   0   -1   Which of the following molecules can have resonance?     CO2   SiO2   CH4   SO2

can you state the number of electrons needed to reach obey the octet rule?