1. what is this element: [Ar] 4s1?
What is the element represented by the notation [Ar] 4s¹?
Additionally, I have a question regarding the following elements:
- Element A: 1s² 2s² 2p⁶
- Element B: 1s² 2s²
- Element C: 1s² 2s² 2p⁶ 3s¹
- Element D: 1s² 2s² 2p³
Can you arrange these elements in increasing order of their atomic size?
Lastly, I need assistance with calculating the atomic mass of Element X. Here are the isotopes and their respective data:
- Isotope 27X: Mass = 27.977 amu, Percent Abundance = 92.23%
- Isotope 28X: Mass = 28.976 amu, Percent Abundance = 4.67%
- Isotope 29X: Mass = 29.974 amu, Percent Abundance = 3.10%
Using this information, please help me identify Element X using the periodic table.
2 Answers
1. K, potassium
-
a. Neon
b. Beryllium
c. Sodium
d. Nitrogen
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