Question

використовуючи Періодичну систему складіть формули сполук з Гідрогеном: а) галогенів; б) халькогенів; в) пніктогенів. У цих сполуках усі елементи виявляють нижчу валентність​

Answer 1

•Галогени : •Халькогени : •Пніктогени:
(1)H 1 F(1) (1) Н2О (2). RH3
(1)Н 1 СІ(1). (1) Н2S (2). AH3

(1) — это валентність елементов

1/2/3— Это те самые маленькие цифры которые снизу должны быть

Надеюсь понятно

Answer 2

Formulas of Compounds with Hydrogen and Halogens:

When hydrogen combines with halogens, it forms binary compounds known as hydrogen halides. The general formula for hydrogen halides is HX, where X represents the halogen element. Here are the formulas of hydrogen halides with different halogens:

- Hydrogen fluoride: HF [[1]] - Hydrogen chloride: HCl [[2]] - Hydrogen bromide: HBr [[3]] - Hydrogen iodide: HI [[4]]

Formulas of Compounds with Hydrogen and Chalcogens:

Chalcogens are the elements in Group 16 of the periodic table, which include oxygen, sulfur, selenium, tellurium, and polonium. When hydrogen combines with chalcogens, it forms binary compounds known as hydrogen chalcogenides. The general formula for hydrogen chalcogenides is H2X, where X represents the chalcogen element. Here are the formulas of hydrogen chalcogenides with different chalcogens:

- Hydrogen oxide (water): H2O [[5]] - Hydrogen sulfide: H2S [[6]] - Hydrogen selenide: H2Se [[7]] - Hydrogen telluride: H2Te [[8]] - Hydrogen polonide: H2Po [[9]]

Formulas of Compounds with Hydrogen and Pnictogens:

Pnictogens are the elements in Group 15 of the periodic table, which include nitrogen, phosphorus, arsenic, antimony, and bismuth. When hydrogen combines with pnictogens, it forms binary compounds known as hydrogen pnictides. The general formula for hydrogen pnictides is H3X, where X represents the pnictogen element. Here are the formulas of hydrogen pnictides with different pnictogens:

- Hydrogen nitride (ammonia): NH3 [[10]] - Hydrogen phosphide: PH3 [[11]] - Hydrogen arsenide: AsH3 [[12]] - Hydrogen antimonide: SbH3 [[13]] - Hydrogen bismuthide: BiH3 [[14]]

In these compounds, all the elements exhibit lower valencies due to the presence of hydrogen.