You visited us 1 times! Enjoying our articles? Unlock Full Access!

Variation of Atomic Size

The atomic ma...

Question

The atomic masses of two elements $A$ and $B$ are $20$ and $40$ respectively. If $x$ g of $A$ contains $y$ atoms, how many atoms are present in $2 x g$ of $B$ ?

y

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

1.5 y

No worries! We‘ve got your back. Try BYJU‘S free classes today!

2 y

No worries! We‘ve got your back. Try BYJU‘S free classes today!

N o n e o f t h e s e

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is B $y$
As we know,
$Mole \times N_{o} = Number of atoms$
So, according to given conditions,
$x \times \frac{N_{o}}{20} = y$
Therefore, $2 x \times \frac{N_{o}}{40} = y$
Hence, $2 x$ g of $B$ will contain $y$ atoms.

Suggest Corrections

Similar questions

The atomic weights of two elements A and B are 40 and 80 respectively. If x g of A contains y atoms, how many atoms are present in 2x g of B?

P

Q

20

40

^{'} a^{'} g

P

^{'} b^{'}

^{'} 2 a^{'} g

Q

x g

2 x g

A

B

X

A

Y

2 X

B

Join BYJU'S Learning Program