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what is Broghlie wavelenght for hydrogen...

what is Broghlie wavelenght for hydrogen atom moving with a velocity of `2000ms_(-1)`? (Atomic mass of hydrogen `=1.00797 a.m.u)`

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Mass of hydrogen atom `=(1.0097)/(6.02xx10^(23))g=1.68xx10^(-24) g=1.68xx10^(-27)kg`
`lambda=(h)/(mv)`=`(6.62xx10^(-34))/(1.68xx10^(-27)xx2000)`=`1.97xx10^(-10)m`
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