Which of the following groups of atoms are most likely to have similar properties?

1.nickel (28), calcium (20), bromine (35)

2.aluminum (13), germanium (32), antimony (51)

3.oxygen (8), selenium (34), tellurium (52)

Which of the following would have less momentum than a 52 kg cheetah running at 10 m/s?

What can be found in the ionosphere

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∘