Chemistry, 05.05.2020 16:46 Easton777

In the periodic table, how does the tendency of atoms to loose electrons change on going from
(i) left to right across a period?
(ii) top to bottom in a group?

can u pls answer this properly thx...

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Answer from: jessicagustama

Explanation:

Tendency of an element to lose the electrons increases when we go down the group.This is because atomic size increases when we move down a group. And force of attraction of nucleus for the valence electron decreases. This makes it easier for an element to lose electrons. Hence, metallic character increases on moving down a group.

We know that there is a increase in the number of valence electrons as well as nuclear charge as we move across a period. Due to this reason, atomic size decreases. As a result, it becomes difficult for an atom to lose electrons as we move from left to right across the periodic table. So tendency to lose the electrons decreases.

Answer from: Quest

Answer: abeexplanation:

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.

Answer from: Quest

a) the particles of the chair are strongly held together.

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In the periodic table, how does the tendency of atoms to loose electrons change on going from
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