A parent nucleus decays by emitting a gamma photon, e. g., Tc-99m decays to Tc-99g. Parent and daughter nuclei are: a) isotopes b) isotones c) isobars d) isomers e) combination of 2 or more of the above

Which of the following compounds does not contain molecules? question 2 options: co2 h2 nacl h2o

Particle model to predict what will happen if a sharp object creates a hole in the soccer ball

Astudent made the lewis dot diagram of a compound as shown. mg is written with two dots shown on its top. an o is written on each side of mg. each o has six dots around it. an arrow is shown from one dot on mg toward the vacant space around the o on the right. another arrow is shown from the other dot on mg toward the vacant space around the o on the left. the title of the art is students lewis dot model. what is the error in the lewis dot diagram? an o atom should transfer all its six electrons to mg because the formula is mgo. both electrons of mg should be transferred to one o atom because the formula is mgo. the electrons should be transferred from each o atom to mg because mg has fewer electrons. the number of dots around mg should be four because it has to transfer two electrons to each o.