Question

an electrically neutral atom has the electron configuration 1s²2s²2p⁶3s²3p⁴. what is the name of this atom? use the periodic table. sulfur chlorine phosphorus selenium question 8 1 pts what is the electron configuration for oxygen (o)? use the periodic table. 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p¹ 1s² 2s² 2p⁴ 1s² 2s² 2p⁴ 3s² 3p⁴ 1s² 2s² 2p¹

Explanation:

Step1: Determine the atomic number from electron - configuration

For an electrically neutral atom, the number of electrons is equal to the atomic number. Add the electrons in each sub - shell: \(2 + 2+6 + 2+4=16\).

Step2: Identify the atom using the atomic number

Looking at the periodic table, the element with atomic number 16 is sulfur.

Step3: Determine oxygen's electron - configuration

Oxygen has an atomic number of 8. Filling the sub - shells in order (\(1s\) can hold 2 electrons, \(2s\) can hold 2 electrons, and \(2p\) can hold 6 electrons), the electron - configuration of oxygen is \(1s^{2}2s^{2}2p^{4}\).

Answer:

Question 1: A. sulfur
Question 2: B. \(1s^{2}2s^{2}2p^{4}\)