Question

question 1 (1 point)
which of the following is the noble gas configuration for beryllium?
o a ne 2s^1
o b he 2s^1
o c he 2s^2
o d ne 2s^2

Explanation:

Beryllium has an atomic number of 4. Helium (He) is the noble - gas with 2 electrons. The remaining 2 electrons of beryllium fill the 2s orbital. So its noble - gas configuration is [He]2s².

Answer:

C. [He] 2s²