5.1.2a Composition of the nucleus and isotopes

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Question 93

Any atomic nucleus can be represented in the notation $ZAX^{A}_{Z}\text{X}$ .

(i) State which letter, $A$ , $X\text{X}$ or $Z$ , is the:

proton number: $............................\text{............................}$
nucleon number: $............................\text{............................}$
chemical symbol: $............................\text{............................}$

(ii) A nucleus of polonium-210 can be written as $84210Po{}^{210}_{84}\text{Po}$ .

Determine the number of electrons in a neutral atom of polonium-210.

{number of electrons} = \text{............................}

Determine the number of neutrons in a nucleus of polonium-210.

{number of neutrons} = \text{............................}

[3]

Explain what is meant by the term isotopes of an element.

$....................................................................................................................................................\text{....................................................................................................................................................}$

[2]

5.1.2a Composition of the nucleus and isotopes

Question 93

Any atomic nucleus can be represented in the notation $ZAX^{A}_{Z}\text{X}$ .

(i) State which letter, $A$ , $X\text{X}$ or $Z$ , is the:

proton number: $............................\text{............................}$
nucleon number: $............................\text{............................}$
chemical symbol: $............................\text{............................}$

(ii) A nucleus of polonium-210 can be written as $84210Po{}^{210}_{84}\text{Po}$ .

Determine the number of electrons in a neutral atom of polonium-210.

{number of electrons} = \text{............................}

Determine the number of neutrons in a nucleus of polonium-210.

{number of neutrons} = \text{............................}

[3]

Explain what is meant by the term isotopes of an element.

[2]

5.1.2a Composition of the nucleus and isotopes

Question 93

Markscheme

5.1.2a Composition of the nucleus and isotopes

Question 93

Markscheme

5.1.2a Composition of the nucleus and isotopes

Question 93

5.1.2a Composition of the nucleus and isotopes Questions

5.1.2a Composition of the nucleus and isotopes

Question 93

5.1.2a Composition of the nucleus and isotopes Questions