the nucleus of helium contains1four protons2four
The nucleus of helium contains:
(1)Four protons
(2)Four neutrons
(3)Two neutrons and two protons
(4)Four protons and two electrons
Ans: (3)Two neutrons and two protons
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in a dtmf phone digits are represented bya orthogonal frequenciesb orthogonal phases c orthogonal codes d orthogonal pulsesansdigits
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the nucleus of helium contains1four protons2four neutrons3two neutrons and two protons4four protons and two electronsans 3two neutrons and two
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