M3S3 – Group 2

Group 2

1 / 10

Which of these properties of magnesium are also properties of beryllium?

(i) It forms a basic oxide

(ii) It forms an ionic chloride

(iii) It reacts with dilute hydrochloric acid

(iv) It forms a stable oxide with the formula MO (where M represents the metal atom)

(i), (ii) and (iii)

(i) and (iii) only

(ii) and (iv) only

(iv) alone

2 / 10

The carbonates of group 2 metals (M):

(i) have the formula of the form MCO₃

(ii) are insoluble in water

(iii) become more difficult to decompose on heating down the group

(iv) decompose on heating to the metal and carbon dioxide

(i), (ii) and (iii)

(i) and (iii) only

(ii) and (iv) only

(iv) alone

3 / 10

Which of the following increase from left to right along the series Mg - Ca - Sr - Ba?

(i) the thermal stability of the nitrates

(ii) the thermal stability of the carbonates

(iii) the solubility of the hydroxides in water

(iv) the solubility of the sulfates in water

(i), (ii) and (iii)

(i) and (iii) only

(ii) and (iv) only

(iv) alone

4 / 10

All the oxides of the metals Mg, Ca, Sr and Ba:

(i) are basic

(ii) consist of giant structures of ions

(iii) form nitrates when they react with dilute nitric acid

(iv) are freely soluble in water

(i), (ii) and (iii)

(i) and (iii) only

(ii) and (iv) only

(iv) alone

5 / 10

Which of these comparative statements are true?

(i) a calcium atom is larger than a calcium ion

(ii) a calcium atom has a larger radius than a magnesium atom

(iii) calcium has a smaller first ionisation energy than magnesium

(iv) a calcium ion is smaller than a magnesium ion

(i), (ii) and (iii)

(i) and (iii) only

(ii) and (iv) only

(iv) alone

6 / 10

Which of these ions has the greatest polarising power?

Ba²⁺

Sr²⁺

Ca²⁺

Mg²⁺

7 / 10

A white crystalline solid gives a pale green colour in a flame. Adding silver nitrate to an acidified solution of the solid produces a white precipitate. The solid is:

magnesium sulfate

sodium chloride

strontium hydroxide

barium chloride

8 / 10

Bubbling carbon dioxide into an aqueous solution of calcium hydroxide produces a white precipitate of:

calcium oxide

calcium carbonate

calcium hydrogencarbonate

calcium carbide

9 / 10

The reaction of calcium with water produces:

calcium hydroxide only

calcium oxide only

calcium hydroxide and hydrogen

calcium oxide and steam

10 / 10

What is the electron configuration of a magnesium atom?

1s²2s²

1s²2s²2p⁶3s²

1s²2s²2p⁶3s²3p⁶4s²

1s²2s²2p⁶3s²3p⁶3d⁶4s²

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