Question

White phosphorus \(\mathrm{P}_{4}\) has the following characteristics:
(A) \(6 \mathrm{P}-\mathrm{P}\) single bonds

(B) \(4 \mathrm{P}-\mathrm{P}\) single bonds
(C) 4 lone pair of electrons

(D) \(P-P-P\) angle of \(60^{\circ}\)
Ans: (A, C, D)

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A beloved National Park Service ranger died when he tripped, fell and struck his head on a rock during an annual astronomy festival in southwestern Utah, park officials said over the weekend.
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He was known for his extensive work as a ranger and volunteer at 14 National Park Service sites, including Yosemite National Park, Carlsbad Caverns National Park and Dinosaur National Monument, the park service said in a statement Saturday.
 
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