Strontium(Sr, atomic number 38, average atomic mass= 87.62) naturally exists as 4 stable isotopes with masses of 84, 86, 87, and 88. Which statement is correct? A. Strontium-87 is the most abundant. B. Strontium-86 is the most abundant. C. All Strontium isotopes are equally abundant. D. Strontium-88 is the most abundant.

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Q: Strontium (Sr, atomic number 38, average atomic mass = 87.62) naturally exists as 4 stable isotopes…

A: Strontium-88 is the most abundant. Hence option C is correct.

Atomic Structure

The basic structure of an atom is defined as the component-level of atomic structure of an atom. Precisely speaking an atom consists of three major subatomic particles which are protons, neutrons, and electrons. Many theories have been stated for explaining the structure of an atom.

Shape of the D Orbital

Shapes of orbitals are an approximate representation of boundaries in space for finding electrons occupied in that respective orbital. D orbitals are known to have a clover leaf shape or dumbbell inside where electrons can be found.