The numbers of protons, electrons and neutrons in a molecule of heavy water are respectively:

Question

The numbers of protons, electrons and neutrons in a molecule of heavy water are respectively: (A) 8,10,11 (B) 10,10,10 (C) 10,11,10 (D) 11,10,10

Tardigrade Admin · Accepted Answer

Heavy water is D2O hence number of electrons = 2 + 8 = 10 number of protons =10 Atomic mass of D2O = 4+16 = 20 hence number of neutron = Atomic mass - number of protons = 20 -10 = 1 0

Q. The numbers of protons, electrons and neutrons in a molecule of heavy water are respectively:

$8, 10, 11$

$10, 10, 10$

$10, 11, 10$

$11, 10, 10$

Heavy water is $D_{2} O$ hence
number of electrons $= 2 + 8 = 10$
number of protons $= 10$
Atomic mass of $D_{2} O = 4 + 16 = 20$
hence number of neutron
= Atomic mass - number of protons
$= 20 - 10 = 10$

Q. The numbers of protons, electrons and neutrons in a molecule of heavy water are respectively:

8,10,11

10,10,10

10,11,10

11,10,10

Heavy water is D2​O hence number of electrons =2+8=10 number of protons =10 Atomic mass of D2​O=4+16=20 hence number of neutron = Atomic mass - number of protons =20−10=10

$8, 10, 11$

$10, 10, 10$

$10, 11, 10$

$11, 10, 10$

Heavy water is $D_{2} O$ hence
number of electrons $= 2 + 8 = 10$
number of protons $= 10$
Atomic mass of $D_{2} O = 4 + 16 = 20$
hence number of neutron
= Atomic mass - number of protons
$= 20 - 10 = 10$