Use the Periodic table to help answer this question: Moving from the element with the atomic number 10 to the atomic number 11 on the periodic table, there is a change in reactivity. Which way do you move on the table to go from 10 to 11?

Question

The Periodic Table of the Elements

(1 point)
Responses

From right to left and up one period
From right to left and up one period

From right to left and down one period.
From right to left and down one period.

From left to right and up one period
From left to right and up one period

From left to right and down one period.
From left to right and down one period.
Question 2
Moving from the element with atomic number 10 to atomic number 11 on the periodic table, there is a change in reactivity. What is the change that is found in the reactivity?(1 point)
Responses

Noble gases are inert. Alkali metals are very reactive.
Noble gases are inert. Alkali metals are very reactive.

Noble gases are very reactive. Alkali metals do not react.
Noble gases are very reactive. Alkali metals do not react.

Element 10 will easily combine with element 11
Element 10 will easily combine with element 11

Neither element is very reactive at all.
Neither element is very reactive at all.
Question 3
Looking at the elements 10 and 11 on the periodic table, what can you tell me about the size of the atom as you go from 10 to 11?(1 point)
Responses

Going from 10 to 11 the atom size is smaller, so it is more reactive
Going from 10 to 11 the atom size is smaller, so it is more reactive

Going from 10 to 11 the atom size is larger, so it is more reactive
Going from 10 to 11 the atom size is larger, so it is more reactive

Going from 10 to 11 the atom size is smaller, so it is less reactive
Going from 10 to 11 the atom size is smaller, so it is less reactive

Going from 10 to 11 the atom size is larger, so it is less reactive
Going from 10 to 11 the atom size is larger, so it is less reactive
Question 4
Moving from the element with atomic number 10 to atomic number 11 on the periodic table, what can be said about the shells and the number of electrons in the shells?(1 point)
Responses

Neon is a noble gas and has a full outside shell of electrons, while sodium does not have a full outside shell.
Neon is a noble gas and has a full outside shell of electrons, while sodium does not have a full outside shell.

Sodium is on the left side of the table and has a full outside shell of electrons while Neon does not.
Sodium is on the left side of the table and has a full outside shell of electrons while Neon does not.

You cannot determine how many electrons are in the outside shell of an atom by looking at the periodic table.
You cannot determine how many electrons are in the outside shell of an atom by looking at the periodic table.

Neon has 10 electrons in its outside shell, Sodium has 11 electrons in its outside shell
Neon has 10 electrons in its outside shell, Sodium has 11 electrons in its outside shell
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Answer 1

Here are the answers to the questions based on moving from the element with atomic number 10 (Neon) to the element with atomic number 11 (Sodium):

Question 1: Moving from the element with the atomic number 10 to the atomic number 11 on the periodic table, which way do you move on the table?

• Response: From left to right and down one period.

Question 2: What is the change that is found in the reactivity moving from atomic number 10 to atomic number 11?

• Response: Noble gases are inert. Alkali metals are very reactive.

Question 3: What can you tell me about the size of the atom as you go from 10 to 11?

• Response: Going from 10 to 11 the atom size is larger, so it is more reactive.

Question 4: What can be said about the shells and the number of electrons in the shells moving from atomic number 10 to atomic number 11?

• Response: Neon is a noble gas and has a full outside shell of electrons, while sodium does not have a full outside shell.

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