Quiz. Write the questions and the answers. 1. What is the name of this table? Example: The name of the most important table in chemistry is called "The
Periodic Table of The Elements."
2. How many elements in total are on the table?
3. Generally, what happens to the atomic mass as the atomic number increases?
4. How many protons are in lodine? The atomic number is 53.
5. How many electrons in an atom of Fermium? The atomic number is located in the extended periodic table.
6. What is the atomic symbol for Gold?
7. What is the atomic mass of Uranium? Include the fraction. These answers will vary slightly in the fraction
depending on the organization publishing the table, and on current research findings.
8. What is the neutron number for Scandium? Sc. Hint: Atomic mass (rounded) minus the number of protons (atomic
number)
9. What is the neutron number for Sulfur?
10. How many electrons are in an atom of Plutonium?
11. Take a picture of your work and submit.
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answer: - 3.) the oxidation state of nitrogen in no changes from +2 to 0, and the oxidation state of carbon in co changes from +2 to +4 as the reaction proceeds.

solution: - as per the rules, oxidation number of oxygen in its compounds is -2. the sum of oxidation numbers of all the elements of a molecule or compound is zero.

also, the oxidation number in elemental form is zero.

in no, the oxidation number of o is -2 so the oxidation number of n is +2 so that the sum is zero.

similarly, the oxidation number of c in co is +2 and o is -2.

on product side the oxidation number of n is 0 as it is in the elemental form() .

oxidation number of c in carbon dioxide is +4 as there are two oxygen in it and we know that each oxygen is -2.

so, oxidation number of n is changing from +2 to 0 and the oxidation number of c is changing from +2 to +4.

since nitrogen is reduced and hence no is acting as an oxidizing agent. carbon is oxidized and so co is acting as a reducing agent.

so, the right choice is number 3.)the oxidation state of nitrogen in no changes from +2 to 0, and the oxidation state of carbon in co changes from +2 to +4 as the reaction proceeds.

the correct answer is option d

explanation:

i was wrong its d because they dont use cm when calculating square roots

- lead + phosphoric acid = hydrogen + lead(ii) phosphate

periodic trends is an atom that gets larger as the number of electronic shells increase, the radius of atoms increases as you go down a certain group in the periodic table of elements. in general, the size of an atom will decrease as you move from left to right of a certain period.