Which group of diamagnetic transition metals trends in density and melring points that don't match the same trends seen in the groups?

Which of the following statements about hybrid orbitals is or are true? choose all that apply. choose all that apply. under sp2 hybridization, the large lobes point to the vertices of an equilateral triangle. after an atom undergoes sp hybridization there is one unhybridized p orbital on the atom. the angle between the large lobes of sp3 hybrids is 109.5∘

What causes the appearance of lines in a emission spectrum

Ahelium balloon contains 16.9 l of helium at stp. how many atoms of helium are in the balloon