CIE AS Chemistry Group 2 and Group 17

Front

Which halide ion can reduce sulfuric acid to sulfur?

Back

I− is the halide ion that can reduce sulfuric acid to sulfur.

Front

What happens to electronegativity as you go down Group 17?

Back

Electronegativity decreases as you go down Group 17.

Front

Which species is the best reducing agent among Cl2, Cl−, I2, and I−?

Back

I− is the best reducing agent among the given species.

Front

Which halide ion reacts with silver ion to form a yellow precipitate?

Back

I− reacts with silver ion to form a yellow precipitate.

Front

What happens to the thermal stability of nitrates as you go down Group 2?

Back

The thermal stability of nitrates increases as you go down Group 2.

Front

Define Group 2 elements in terms of their general properties.

Back

Group 2 elements, also known as alkaline earth metals, are characterized by their shiny appearance, low density, and tendency to lose two electrons to form +2 ions.

Front

What is the trend in atomic radius as you move down Group 2?

Back

The atomic radius increases as you move down Group 2 due to the addition of electron shells.

Front

Explain the reactivity trend of Group 2 elements with water.

Back

Reactivity of Group 2 elements with water increases down the group, with barium reacting vigorously and magnesium reacting slowly.

Front

What is the color of the precipitate formed when I− reacts with lead(II) ions?

Back

The precipitate formed is yellow when I− reacts with lead(II) ions.

Front

What is the general trend in boiling points of Group 17 elements?

Back

The boiling points of Group 17 elements increase as you go down the group.