If an element has an atomic number 19, what is the element? If the mass number is 39, how many neutrons does it have? If it is a neutral atom how many electrons does it have?​

neutrons = 20

Explanation:

No. of Neutrons = Mass No. - Atomic No

= 39 - 19

=20

1) What is the element? Potassium

2) how many neutrons does it have? 20

3) If it is a neutral atom how many electrons does it have?​ 39

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explanation:

two years ago, when picking flowers in the mountains back of yosemite valley, i found a book. it was blotted and storm-beaten; all of its outer pages were mealy and crumbly. the paper seemed to dissolve like the snow beneath which it had been buried, however; many of the inner pages were well preserved. and although all were more or less stained and torn, whole chapters were easily readable. this is the condition of the great open book of yosemite glaciers today; its granite pages have been torn and blurred by the same storms that wasted the castaway book.

two years ago, when picking flowers in the mountains back of yosemite valley; i found a book. it was blotted and storm-beaten, all of its outer pages were mealy and crumbly. the paper seemed to dissolve like the snow beneath which it had been buried, however, many of the inner pages were well preserved. and although all were more or less stained and torn; whole chapters were easily readable. this is the condition of the great open book of yosemite glaciers today, its granite pages have been torn and blurred by the same storms that wasted the castaway book.