Q. The de Broglie wavelength of a tennis ball of mass 60 g moving with a velocity of 10 metres per second is approximately (Planck’s constant h = 6.63 × 10–34 Js]
A. 10–33 metre
B. 10–31 metre
C. 10–16 metre
D. 10–25 metre
Answer: 10–33 metre
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Mg2+ is isoelectronic with
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