Answer:
im pretty sure the answer is number 3. The nervous system provides nutrients and oxygen for the muscular system
Explanation:
Answer: All of them are true
CO2. An ionic compound is a metal and a nonmetal.
Gallium element with symbol Ga has an atomic number of 31.
Electrons start filling orbitals in increasing energy levels.
First energy shell contains the s orbital which can hold only 2 electrons.
Second energy shell contains a both p orbital and s orbital, p orbital can hold upto 6 electrons, so a total of 8 electrons in the 2nd shell.
Third energy shell contains s, p and d orbital. d orbital can hold upto 10 electrons, so the third shell can hold up to 18 electrons.
electronic configuration of Ga is 1s^2 2s^2 2p^6 3s^2 3p^6 3d^10 4s^2 4p^1
we are asked to write in the condensed form, which means we have to write the noble gas with the nearest electronic configuration to Ga.
Noble gas with electronic configuration closest to Ga is argon with atomic number 18.
Ar - 1s^2 2s^2 2p^6 3s^2 3p^6
Ga in condensed form - [Ar] 3d^10 4s^2 4p^1
Atoms form chemical bonds to make their outer electron shells more stable