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Which Element Am I (Core)

Names

1. I have 4 valence electrons and 2 energy levels. Which element am I?

2. Iam in group 16 with 2 energy levels. Which element am I?

3. I am in Period 2 and belong to the same group (family) as silicon. Which element am 1?

4. I have 7 valence electrons and 3 energy levels? Which elementar ?

5. I am in period 3 and I have 12 protons in my nucleus. Which element am 1?

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6. I am the only element with no neutrons in my nucleus. Which element am 17

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7. I am the only metalloid with 3 energy levels. Which element am I?

8. I have 1 valence electron and 11 protons, which element am I?

9. Thave only one energy level that is full. Which element am I?

10.1 have 8 valence electrons and I have 4 energy levels. Which element am 1?

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Respuesta :

pstnonsonjoku

Answer:

1) Helium

2) Oxygen

3)Carbon

4) Chlorine

5) Magnesium

Explanation:

Helium has the electron arrangement 2, 2. There are two electrons in the first shell and two electrons in the second shell.

Oxygen is the first member of group 16, there are two energy levels in oxygen which are 2,6.

Carbon is in period 2 and is the first member of group 14 (the silicon family).

Chlorine has 7 valence electrons, the electrons are arranged as 2, 8, 7.

Magnesium has 12 protons and 12 electrons. It is the second member of period 3.

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