Question

4.An atom of an element X is written as 2X°.
Number of protons , neutrons , electrons
and number of electrons in the outermost
shell in an atom is
1. 4,4.5,2
2. 5,4,4,2
3. 4,2,5,4
4. 4,5,4,2​

Answer 1

Answer:

<br> What does the figure 9 indicate ? <br> (b) What does the figure 4 indicate ? <br> (c) What is the number of protons in atom X ? <br> (d) What is the number of neutrons in atom X ? <br> (e) What is the number electron in atom X ? <br> (f) How many electrons are there in the outermost shell of an atom of element X ? <br> (g) Write the symbol of ion formed by an atom of element X.

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