Question

From the following set of the elements and their atomic masses obtain Dobereine
triad:
Element
Br
K
I
CI
Atomic mass
79,9
39
126.9 35.5​

Answer 1

Answer:

A joystick is an input device consisting of a stick that pivots on a base and reports its angle or direction to the device it is controlling

Explanation:

Answer 2

Answer:

Dobereiner's triads- It states that the atomic mass of middle element in doberiener's triad is exactly or nearly the arithmetic mean of the atomic masses of other two elements.

∴AtomicmassofBromine=  

2

(Atomicmassofchlorine)+(AtomicmassofIodine)

​

 

⟹ Atomic mass of Bromine =  

2

35.5+126.9

​

 

⟹ Atomic mass of Bromine =81.2