• This is an ion containing 2 extra electrons. Name the element?
1s2 2s2 2p6 3s2 3p6
Use the periodic table to answer this

The formula is (nh4)2co3

C. chemical changeshope i : )

Mars contains iron oxide in its crust

3-isopentane; 3-methylbutane, and 1,2-methylpropane do not meet iupac rules, so they are wrong names.the only valid name onthe list is 2-methylbutane, which is the same isopentane.this is its formula:                   ch2                    |ch3 - ch - ch2 - ch3answer: 2-methylbutane