Question

(Short Answer Type Question)
What is Emiting reagent?
calculate de Broglie wavelength of helium atom a 270 g
with a velocity of 21 10 metrelec
What is the cause of penodicity in properties of clients ?
Why do stoms take part in chemical bonding?
What is the formulation of hydride and hydronium ion ?
Why Co, is a gas while Sio, is solid ?
Or
0
10.​

Answer 1

Answer:

ANSWER

Energy E=

2

3

KT where K= Boltzmann constant.

2

3

KT=

2

1

mv

2

⟹mv=

3mKT

∴λ=

mv

h

=

3mKT

h

For Helium atom, m=

6.02×10

23

4×10

−3

=6.64×10

−27

kg

T=27+273=300K and K=1.38×10

−23

JK

−1

∴λ=

3mKT

6h

=

3×6.64×10

−27

×1.38×10

−23

×300

6.6×10

−34

≈7.3×10

−11

m