The table shows the numbers of protons, neutrons and electrons in four different particles, W, X, Y, and Z. number of protons number of neutrons number of electrons --- --- --- --- W 32 40 32 X 32 40 34 Y 32 42 32 Z 34 40 34 Which pair represents the atoms of two isotopes of the same element? Options A W and Y B W and Z C X and Y D X and Z

Chemistry 9701/12 — February/March 2021

Cambridge AS Level · Multiple Choice (AS Level) · answer key with instant marking and worked solutions

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Topics Atoms, Molecules and Stoichiometry · Hydroxy Compounds · Carboxylic Acids and Derivatives · Electrochemistry · Nitrogen and Sulfur · Introduction to Organic Chemistry · +14 more

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Q11MAtomic StructureFree sample

The table shows the numbers of protons, neutrons and electrons in four different particles, W, X, Y, and Z.

	number of protons	number of neutrons	number of electrons
W	32	40	32
X	32	40	34
Y	32	42	32
Z	34	40	34

Which pair represents the atoms of two isotopes of the same element?

Options

A W and Y
B W and Z
C X and Y
D X and Z

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