Read the table and answer the question below:
Elements $A$ $B$ $C$ $D$ $E$
MASS NO. $1$ $7$ $14$ $40$ $40$
Atomic No. $1$ $3$ $7$ $18$ $20$

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Solution

According to the given table the number of protons present in A,B,C,D and E are 1,3,7,18, and 20 and neutrons are 0,4,7,22,20 respectively.

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Elements	$A$	$B$	$C$	$D$	$E$
MASS NO.	$1$	$7$	$14$	$40$	$40$
Atomic No.	$1$	$3$	$7$	$18$	$20$

Read the table and answer the question below:ElementsABCDEMASS NO. 17144040Atomic No.1371820

According to the given table the number of protons present in A,B,C,D and E are 1,3,7,18, and 20 and neutrons are 0,4,7,22,20 respectively.

Read the table and answer the question below:
Elements $A$ $B$ $C$ $D$ $E$
MASS NO. $1$ $7$ $14$ $40$ $40$
Atomic No. $1$ $3$ $7$ $18$ $20$