Question

Element A, B & C have atomic numbers 6, 9, 12 respectively. Which will form:
1. Anion
2. Cation
3. Has 4 electrons in its valence shell
4. Non metal

Answer 1

Answer:

3

Explanation:

Hope it will be help you

Answer 2

Answer:

Explanation:

Given: Elements A, B & C with atomic numbers 6, 9, 12 respectively.

We infer: The elements with the given atomic number are Carbon (C), Flourine (F), Magnesium (Mg) respectively.

1) Carbon is an anion with charge -4.

Fluorine is electrically neutral. If a Fluorine atom gains an electron, it becomes a Fluoride ion with an electric charge of -1.

2) Magnesium is a cation.

3) Carbon (C) with atomic number 6 has 4 electrons in its valence shell. Electronic configuration is: 2, 4.

4) Fluorine is a non-metal.