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4. Match the following :

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Element No. of Neutron
a. \({^{40}_{18}AR}\) i. 7
b.\({^{14}_{6}C}\) ii. 21
c.\({^{40}_{19}K}\) iii. 8
d.\({^{14}_{7}N}\) iv. 22

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Element No. of Neutron
a. \({^{40}_{18}AR}\) iv. 22
b.\({^{14}_{6}C}\) iii. 8
c.\({^{40}_{19}K}\) ii. 21
d.\({^{14}_{7}N}\) i. 7

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