Question

answer the following questions refering the above table

i) Choose from the table which particle represents an anion, a cation, a pair of isotopes.

ii) Identify the element with mass no. 19.

iii) What will be the formula of the compound formed by element A & B?
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Answer 1

Answer:

(i) c and d

(ii) potassium

(iii) Ab ( LiF)