Question

Укажіть пару елементів, атоми яких можуть утворити лише аніони а)N, Cl б)Mg, O в)Ca, Na г)K, C​

Answer 1

Ответ:

Мне кажется я не знаю химию

Объяснение:

Answer 2

Elements that can only form anions:

a) Nitrogen (N) and Chlorine (Cl) b) Magnesium (Mg) and Oxygen (O) c) Calcium (Ca) and Sodium (Na) d) Potassium (K) and Carbon (C)

Anions are negatively charged ions that are formed when atoms gain electrons. Elements that have a tendency to gain electrons easily are more likely to form anions. Let's look at each pair of elements mentioned:

a) Nitrogen (N) and Chlorine (Cl): - Nitrogen (N) has 5 valence electrons and can gain 3 electrons to achieve a stable electron configuration of 8 valence electrons. It forms the nitride ion (N3-). - Chlorine (Cl) has 7 valence electrons and can gain 1 electron to achieve a stable electron configuration of 8 valence electrons. It forms the chloride ion (Cl-). - Both nitrogen and chlorine can form anions.

b) Magnesium (Mg) and Oxygen (O): - Magnesium (Mg) has 2 valence electrons and tends to lose 2 electrons to achieve a stable electron configuration of 8 valence electrons. It forms the magnesium ion (Mg2+). - Oxygen (O) has 6 valence electrons and tends to gain 2 electrons to achieve a stable electron configuration of 8 valence electrons. It forms the oxide ion (O2-). - Both magnesium and oxygen can form anions.

c) Calcium (Ca) and Sodium (Na): - Calcium (Ca) has 2 valence electrons and tends to lose 2 electrons to achieve a stable electron configuration of 8 valence electrons. It forms the calcium ion (Ca2+). - Sodium (Na) has 1 valence electron and tends to lose 1 electron to achieve a stable electron configuration of 8 valence electrons. It forms the sodium ion (Na+). - Neither calcium nor sodium can form anions.

d) Potassium (K) and Carbon (C): - Potassium (K) has 1 valence electron and tends to lose 1 electron to achieve a stable electron configuration of 8 valence electrons. It forms the potassium ion (K+). - Carbon (C) has 4 valence electrons and can gain 4 electrons to achieve a stable electron configuration of 8 valence electrons. It forms the carbide ion (C4-). - Both potassium and carbon can form anions.

In summary, the elements that can only form anions are: a) Nitrogen (N) and Chlorine (Cl) b) Magnesium (Mg) and Oxygen (O) d) Potassium (K) and Carbon (C)