Which of the electron configurations would you expect to have the lowest first lontation
energy?
1 1s’2 2s'pº 3s
2 1s’2 2s'p" 35" "
3 1s’2 2s'pº
4 1s’2 2s'p
5 1s’2 2s'p

the correct option is c.

isotopes refers to different forms of the same element with the same atomic number but different mass number as a result of difference in their neutron numbers. isotopes have different relative atomic mass but share the same chemical properties.

the dependant variable is spilled water

the independent is the heat

the answer is a! (2.9 x 10^-18 j) hope i could someone. : )