Question

Following is a portion of the periodic table that includes the first 18 elements. For each of these elements, the

number of electrons present in each energy level is shown. However, four of these values have been entered
incorrectly.
Use what you know about each neutral atom and any patterns you notice in the table's data to identify the four
incorrect values.
Select the four incorrect values in the table.

Answer 1

The four incorrect values for the number of electrons in each energy level can be identified as Beryllium: 2 electrons in the first energy level, Nitrogen: 2 electrons in the second energy level, Neon: 6 electrons in the second energy level, and Magnesium: 6 electrons in the second energy level.

Step-by-step explanation:

The question asks you to identify the four incorrect values for the number of electrons present in each energy level shown in the given portion of the periodic table. To do this, you need to understand the electron configuration of each element and any patterns in the data. Four incorrect values can be identified as follows:

1. Beryllium (Be): In the given table, it shows 2 electrons in the first energy level, which is incorrect. Beryllium actually has 2 electrons in the second energy level (2s²).
2. Nitrogen (N): The table shows 2 electrons in the second energy level (2s²), which is incorrect. Nitrogen actually has 5 electrons in the second energy level (2s²2p³).
3. Neon (Ne): The table shows 6 electrons in the second energy level (2s²2p⁴), which is incorrect. Neon actually has 8 electrons in the second energy level (2s²2p⁶).
4. Magnesium (Mg): The table shows 6 electrons in the second energy level (2s²2p⁴), which is incorrect. Magnesium actually has 2 electrons in the third energy level (3s²).

Based on the correct electron configurations, these are the four incorrect values in the given table.