When ions come together to form a crystal, energy is released. which of the following best describes this energy a) ionic energy. b) lattice energy. c) ionization energy. d) deactivation energywhen ions come together to form a crystal, energy is released. which of the following best describes this energy a) ionic energy. b) lattice energy. c) ionization energy. d) deactivation energy

Option (B) is the correct answer.

Explanation:

Lattice energy is defined as the energy released when formation of 1 mole of an ionic compound occurs due to the combination of its constituent ions.

Hence, more is the magnitude of lattice energy more will be the stability of the ionic compound.

Ionization energy is defined as the energy required to remove the most loosely bound electron from a neutral gaseous atom.

Thus, we can conclude that the statement when ions come together to form a crystal, energy is released best describes lattice energy.

1. the question asks the most appropriate, which seems to rule out "all of the above." your choice appears to be the correct one.

2. the protocol described is good for identifying correlation, but not cause and effect. for cause/effect, you need to devise a protocol that will assign the treatment (or not) to groups that have essentially the same "demographics" with respect to all the other variables. your choice regarding control group seems appropriate. random assignment of treatment (choice d) may be appropriate also. (i think you can argue that b and d are just different descriptions of the same method.)

3. d will randomize the birds, but may not guarantee there are 10 in each group. e will do both, so seems the better choice.

comment on question 2

based on the problem statement, it seems clear that confident, attentive drivers are more likely to use daytime running lights. so, the protocol might need to be devised in such a way that the lights would be turned on or off without the driver's knowledge. (an attentive driver will figure it out.) assigning a confident, attentive driver to a group required to drive without running lights might mess with his/her confidence and attentiveness. you don't want your experiment to do that. (nor do you want the experiment to subject a driver to greater risk of accident as a consequence of driving without running lights.) experiments involving human safety are always problematic.

the atomic number will stay the same no matter how many electrons it has, so it doesn’t decrease nor increase. it’ll only change with a different number of protons