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What is the isotope symbol for an atom that contain 2 protons and 1 neutron?

Answer 1

Avery Adams

The isotope symbol for helium-3 is #""_2^3"He"#.

Helium-3 contains 2 protons and 1 neutron. Here's the general formula to write isotope symbols

#""_B^A"C"#

A Represents the mass number

B represents the atomic number

C Represents the element symbol

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Answer 2

Luna Chen

# ""_2^3He#

Two protons are represented by the subscript 2 and the total mass of three is represented by the superscript 3: two protons plus one neutron equals three amu mass.

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Answer 3

Cooper Adams

Hydrogen-3

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.