Question

What atomic number of an element X would have to become so that the 4th orbit around would fit inside the 1 both orbit of the h atom​

Answer 1

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16

STEP BY STEP EXPLANATION:

•By definition of Bohr radius ao,

•r=n2(Zao),r= radical distance from the nucleus of a H-like atom

•So, if we want r=ao,

•Z=n2(rao)=n2(aoao)=n2

•For the 4th Bohr orbit, n=4,

•⇒Z=42=16

࿐

@itzunique♥️

Answer 2

$\huge\rm\underline\purple{ANSWER :-}$

r n = lZn 2 ×52.9

(in pm)where,

:-

$\frac{(r_ =)(n)}{(r)(n)} =$

radius of n^{th}n th orbit

n = number of orbit

Z = atomic number

First orbit of hydrogen atom:

= 11 2 ×52.9=52.9pm

Forth orbit of hydrogen like atom with atomic mass equal to Z:

Z=16Z=16

The atomic number is 16.