If the K, L, and M energy levels of Pt are 78000 eV, 12000 eV and 30000 eV, respectively, [img=164x27]17869ee468dc784.png[/img]line from Pt is ( )
A: 14.3 pm
B: 43.6 pm
C: 92.6 pm
D: 18.6 pm
A: 14.3 pm
B: 43.6 pm
C: 92.6 pm
D: 18.6 pm
举一反三
- If the K, L, and M energy levels of Pt are 78000 eV, 12000 eV and 30000 eV, respectively, [img=164x27]17da69b5ba9e0d2.png[/img]line<sub> </sub>from Pt is ( ) A: 43.6 pm B: 92.6 pm C: 14.3 pm D: 18.6 pm
- If the K, L, and M energy levels of Pt are 78000 eV, 12000 eV and 30000 eV, respectively, the wavelength of Ka line from Pt is ( )
- 静液柱压力计算公式是（）。 A: pm=gρm/Hm B: pm=gρmHm C: pm=ρmHm D: pm=ρm/gHm
- When will the product be ready A: 1 pm B: 3 pm C: 4 pm D: 6 pm
- 一个自然数的算术平方根是x，则下一个自然数的平方根是 A: $$\pm(\sqrt{x}+1)$$ B: $$\pm\sqrt{x^2+1}$$ C: $$\pm\sqrt{x+1}$$ D: $$\pm(x+1)$$