Question

Which of the following elements has maximum density of nucleus?

• A. ${{}_{14}Si}^{30}$
• B. ${{}_{15}P}^{31}$
• C. ${{}_{8}O}^{16}$
• D. All have same desity

Answer 1

The correct option is B ${{}_{15}P}^{31}$

$Element$	$Atomic$ $number$$\left(A\right)$	$Atomic$ $mass$ $number$$\left(Z\right)$	no. of proton (A)	no. of neutron(2A-Z)
$Si$	14	30	14	16
$P$	15	31	15	16
$O$	8	16	8	8

The element containing greater number of proton and neutron has greater density, phosphorus has highest density as compared to others.

$P>Si>O$