Choose the element with the higher atom size from each of the following: Mg, P^3

Question

Choose the element with the higher atom size from each of the following: Mg, P^3+, As, Sb, N, Si, O^2-, Cl, Ne, S^2-? The average distance between Mars and Earth is about 1.345 times 10^8 miles. How long would it take TV pictures transmitted from the Viking space vehicle on Mars surface to reach Earth? (1 mile =1.61 km) There are three Questions, try to answer any two? Predict the geometry of the following: AlCl_4^- H_2O MgCl_2 PCl_5 Protons can be accelerated to speeds near that of light in particle accelerators. Estimate the wave length (in nm) of such a proton moving at 6.9 times 10^10 cm/s, consider the mass of proton 1.673 times 10^-24 g.

Explanation / Answer

Q17) the largest size atom is Mg

q18) in one second light travels 3 X 108m/s

Distance between mars and earth = 1.345 X 108 miles = 1.345 X 1.61 X 108 km = 2.16545 X  108 Km

1 Km = 1000 m

2.16545 X  108 Km = 2.16545 X 1011 m

light travels 3 X 108 m in 1 sec

then 2.16545 X 1011 m is travelled in 2.16545 X 1011 / 3 X 108 = 0.7218 X 103 = 721.8 sec

Q19)

a) AlCl4-    tetrahedral

H2O V shape

MgCl2 linear

PCl5 Trigonal bipyramidal

Related Questions

Navigate

• Browse (All)
• Browse C
• Subjects

---