Answer:
A calculator has an endifiite shape because all of its atoms are touching each other
Be-beryllium have 2 electrons and it is in the 2 nd period
Atoms must gain or lose electrons in order to become ions if they are to form ionic bonds.
Answer: since the sodium ion is Na+, and sulfate is SO4(2-), you'll need 2 sodiums for a sulfate, making sodium sulfate Na2SO4.
Explanation:
Answer: C
Explanation:
The one closest to the atomic center, there is a single 1s orbital that can hold 2 electrons. At the next energy level, there are four orbitals.
