Question

please help me with this table.... ​

Answer 1

Answer:

A. 14 ( as mass no= no.of protons+no.of neutrons

=7+7=14u)

B. 7 ( atomic no. of an element=no. of electrons in it= no. of protons in it.=7)

C. 15 ( no.of protons of an element=it's atomic no.)

D. 16 ( we know that mass no= no. of protons+no. of neutrons

or, 31=15+D

or, D=16)

E. 28 ( as mass no= no.of protons+no.of neutrons

=14+14=28u)

F. 14 ( as no of protons=atomic number of element=14)

G. 19 ( as mass no= no.of protons+no.of neutrons

=9+10=19u)

H. 9 (as atomic no.= no. of electrons in it= no. of protons in it)

I. Carbon ( as here atomic no.is 6 which is of carbon)

J. 6 ( we have, mass no=12

and no. of protons=6

as mass no= no.of protons+no.of neutrons

or, 12=6+J

or, J=6)

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