Question

write the symbols for the atoms with the given atmic numbers (Z)and mass number(A )
(1) Z=17,A=35
(2)Z=4,A=9
(3)Z=11,A=23​

Answer 1

Answer:

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Explanation:

(1) Z=17, A=35

Chlorine (Cl)

(2) Z=4, A=9

Beryllium (Be)

(3) Z=11 A=23

Sodium (Na)

Answer 2

Answer:

(1) Cl

(2) Be

(3) Na

Explanation:

Refer Ncert class 9 textbook Section chemistry chapter The structure of the atom for more types.