Why Big Fr and Hungry F

1.Why Francium is the biggest element with the lowest IE and EN?
Francium is the biggest element with the lowest IE and EN because it has 7 shells which makes it the largest element. Since nucleus and valance electrons are far away, they can't attract or take away electrons from other elements and easily give electrons away.

2.Why Helium is the smallest element with the highest IE?
Helium is the smallest element with the highest IE because it has two valance electrons in its only one shell which make it more stable than other full valance elements like noble gases. Since the valance electrons are closer to the nucleus, the nucleus of positive charge strongly attract negative charge of electrons on its shells that takes a lot of energy to break up electrons from helium.

3.Why Noble Gases don't have EN values?
Noble Gases don't have EN values because they have full valance electrons which make them can't take or react with any electrons from others.

4.Why Fluorine has the highest EN?
Flourine has the highest EN has it has seven valance electrons which needs to gain only one electrons. Of the halogens, fluorine is the smallest element which is the most powerful taker of electrons and the  most reactive non-metals.

Bromine is Element # 35

A reddish-brown bromine

It's me bromine here

1. My name bromine comes from the Greek word "bromos" meaning "stench".My name in German is "Brom", in Italian is "Bromo", and in French is "Brome".

2. I am a diatomic, non-metallic liquid element. I have reddish-brown colour and my vapors are regarded as corrosive and toxic.

nucleus of bromine

3.The nucleus of my most common isotope contains 35 protons and 45 neutrons. My naturally stable isotopes are ⁷⁹Br and ⁸¹Br.I have two half- lives isotopes called  ⁷⁷Br which lasts  2.376 days and ⁸²Br with 1.471 days. My natural abundance of isotopes are 50.69% of  ⁷⁹Br and 49.31% of ⁸¹Br. My average atomic mass is 79.9 u. 

electrons of bromine

4.I have 35 electrons in a neutral atom of my element and I have 2,8,18,7 electrons from the inner to outer shell.

atomic radius of bromine

5.My atomic radius in meters is 1.15x10^-10

Melting point of elements

6.My properties in my pure elemental form are 

^{1)melting point-19F}

^{2)boiling point-137.8F}

^{3)element category-halogen}

^{4)an insulator}

^{5)density-3.1023 grams per cubic centimeters}

^{6)liquid at room temperature 20C}

^{7) highly reactive}

My abundance in the whole world

7. My abundance in my body is 0.164575 grams. My abundance in our Universe is 7 parts per billion by weight and in the Earth's crust is 2.4 parts per million by weight.

8. The compounds I formed are 

Bromine trifluoride

Calcium bromide

Bromine dioxide

My discoverer Balard

9.I was discovered by Antoine J Balard at 1826 in France.The exams on bromine of Lowig over the summer helps Balard in discovering it.

The tablets used as toxic

10.It's a sad news that I am not a good guy in human society.
1)I should be treated as toxic but excessive of me would leads to depression and of weight loss.
2)My vapors can attack the eyes and lungs with painful effects
3)I am used to make plastic flame retardant,pesticides,water purification, dyes,etc.   






11The funny jokes I have heard about bromine is :
     "You are looking down in the mouth today" said one Potassium bromide to anther.
     "Yep, we both are called to help an ailment through an alimentary canal today." replies the other one
     "But I'm not sure I can stomach the thought!" 
     "We will have to; its the process of elimination that does the trick with us"
     "That's my gut feeling as well."
     "Well, see you in the colon. Bye"

12.The references: www.webelements.com

                            www.google.com

                            www.yahoo.com

                            www.wikipedia.org

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