In which option do the three particles each have the same number of electrons?

5070_w09_qp_1

MCQ

2009

Paper 1, Variant 0

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The table contains information on the structure of four particles. particle proton number number of protons number of neutrons number of electrons Mg W Mg2+ X F Y F– Z What are the values of W, X, Y and Z in the table above?

5070_w14_qp_11

MCQ

2014

Paper 1, Variant 1

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Which particle contains the greatest number of electrons?

5070_w18_qp_12

MCQ

2018

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An atom of which element has the same electronic configuration as an atom of an ion of strontium?

5070_w20_qp_11

MCQ

2020

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An ion contains 20 electrons and has a charge of +3. From which element was the ion formed?

5070_w20_qp_12

MCQ

2020

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An atom of which element has the same electronic configuration as an atom of an ion of strontium?

5070_w20_qp_12

MCQ

2020

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Which two statements indicate that metal M may have a proton number between 21 and 30?

5070_w21_qp_11

MCQ

2021

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Which two statements indicate that metal M may have a proton number between 21 and 30?

5070_w21_qp_12

MCQ

2021

Paper 1, Variant 2

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The diagram shows the outer shell electrons of the atoms of two elements, Q and R. key = an electron = a nucleus Q R The sulfate of Q is insoluble. Element R is gaseous at room temperature and pressure. Which row could be correct?

5070_w22_qp_11

MCQ

2022

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A student makes three statements. Calcium ions have a 2+ charge and oxide ions have a 2– charge. Magnesium ions and oxide ions have the same electronic configuration as neon. Calcium ions have three full electron shells and magnesium ions have two full electron shells. Which statements are correct?

5070_w23_qp_11

MCQ

2023

Paper 1, Variant 1

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