An ion has a charge of -1. Which of the following electron
arrangements could form an ion with this charge?
2,8
2,8,7
2,1
2.8

When a nucleus absorbs a neutron and then breaks apart, there are many products of the reaction. what is not a product of a nuclear fission reaction

The number to the right of an element's symbol (ex. c-12) identifies the of an isotope.

Which of the following shapes would represent a molecule with two bonded atoms and 3 lone pairs on only one of them , trigonal planar , bent , trigonal pyramidal , linear