Answered

A deuterium nucleus consists of one proton and

one neutron. The quark composition of a

deuterium nucleus is

(1) 2 up quarks and 2 down quarks

(2) 2 up quarks and 4 down quarks

(3) 3 up quarks and 3 down quarks

(4) 4 up quarks and 2 down quarks

Verified Answer :

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A proton consists of 2 up quarks and 1 down quark.
A neutron consists of 1 up quark and 2 down quarks.

A deuterium nucleus consists of one proton and one neutron, so its quark composition is (3) 3 up quarks and 3 down quarks.

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