Question 1

Which of the following elements is in Group 2A and Period 3 of the periodic table, based on the provided periodic table segment?

Accepted Answer

Mg

Question 2

What is the oxidation number of nitrogen in dinitrogen pentoxide ($$\mathrm{N_2O_5}$$)?

Accepted Answer

$$+5$$

Question 3

Which of the following nitrogen oxides is a blue solid that reversibly dissociates to NO and NO$$_2$$?

Accepted Answer

Dinitrogen trioxide ($$\mathrm{N_2O_3})$$

Question 4

Which of the following is the correct formula for perbromic acid?

Accepted Answer

$$\mathrm{$$HBrO_4$$}$$

Question 5

A colorless gas known as 'laughing gas' is used as an anesthetic. What is its chemical formula and the oxidation number of nitrogen in it?

Accepted Answer

$$\mathrm{N_2O}$$, $$+1$$

Question 6

Which of the following acids contains iodine in its highest possible oxidation state?

Accepted Answer

Periodic acid ($$\mathrm{$$HIO_4$$})$$

Question 7

Which of the following statements about dinitrogen tetroxide ($$\mathrm{N_2O_4}) is $$correct?

Accepted Answer

It is a colorless liquid/gas that dissociates to $$\mathrm{NO_2$}.$$

Question 8

Which of the following is the correct name for $$\mathrm{$$HClO_2$$}$$?

Accepted Answer

Chlorous acid

Question 9

A student is given a sample of a brown, paramagnetic gas that is an odd-electron molecule. Which nitrogen oxide is it most likely to be?

Accepted Answer

$$\mathrm{NO_2$}$$

Question 10

Which of the following elements is in the same group as silicon (Si) but in the period above it?

Accepted Answer

None of the above

Question 11

Which of the following is the correct formula for the halite oxoanion of bromine?

Accepted Answer

$$\mathrm{$$BrO_2$$^-}$$

Question 12

Which of the following acids is correctly paired with its structure and central atom?

Accepted Answer

Perhalic acid, $$\mathrm{$$HIO_4$$}$$, central atom: iodine

Question 13

Which of the following best describes the trend in oxidation number for nitrogen in its oxides as the number of oxygen atoms increases?

Accepted Answer

The oxidation number of nitrogen increases.

Question 14

Which of the following is the correct formula for the perhalate ion of chlorine?

Accepted Answer

$$\mathrm{$$ClO_4$$^-}$$

Question 15

A sample of dinitrogen trioxide ($$\mathrm{N_2O_3}) is $$heated and decomposes. Which two nitrogen oxides are formed?

Accepted Answer

$$\mathrm{NO}$$ and $$\mathrm{NO_2$}$$

Question 16

Which of the following is the correct name for $$\mathrm{$$HBrO_2$$}$$?

Accepted Answer

Bromous acid

Question 17

Which of the following elements is in the same period as magnesium (Mg) and in the same group as boron (B)?

Accepted Answer

Aluminum (Al)

Question 18

Which of the following is a colorless solid with nitrogen in the $$+5$$ oxidation state?

Accepted Answer

Dinitrogen pentoxide ($$\mathrm{N_2O_5})$$

Question 19

Which of the following is the correct formula for the hypoiodite ion?

Accepted Answer

$$\mathrm{IO^-}$$

Question 20

Which of the following acids is not possible for fluorine, based on the provided table?

Accepted Answer

Halous acid ($$\mathrm{$$HFO_2$$})$$

Periodic Table Trends, Nitrogen Oxides, and Halogen Oxyacids

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