Atob

ISOTOPES               In nature,there are atoms of a particular element whose nucleus have same number of protons but different numbers of neutrons.These kind of atoms are called isotopes.In other words, isotopes are atoms of the same element having same atomic numbers but different mass number. For example, hydrogen has three isotopes and they are represented as ¹H(hydrogen) ²H(deuterium) ³H(tritium).Note that all the three nuclei have one proton and hydrogen has  o neutron,deuterium has 1 neutron and tritium has 2 neutrons                     The chemical properties of any atom are determined only by electrons,the isotopes of the same element are placed in the same location in the periodic table. 

 50science facts 1.There are more trees on earth than stars in our galaxy         NASA experts believe there could be anywhere from 100 billion to 400 billion stars in the milky way galaxy.However a 2015 paper published in the journal nature estimated that the number of trees around the world is much higher 3.04 trillion  2.Oxygen has a colour         As a gas oxygen is colorless and odorless.In its liquid and solid forms,however  it looks pale blue 3.Bananas are radioactive             Banans contains potassium. Since potassium decays that makes them slightly radioactive. But it's nothing you need to worry about it. You'd need to eat 10000000 banans at once to die   4.Formation of water           When hydrogen is burn in the air,water is formed 5.Wind resistance         A car travelling at 80km/hr uses half its fuel to overcome wind resistance  6.T...

  Ability      1. Without luck ability is nothing       அதிர்ஷ்டம் இல்லையேல் திறமையும் இல்லை     2. Ability is of little ac 1 count without opportunity         வாய்ப்பில்லாத திறமைக்கு வருமா பெருமை?     3.Behind an ableman there are always other able man       ஒரு வித்தகனுக்குப் பின்னால்  ஓராய்ரம் வித்தகர்கள்     4. From each according to his abilities to each according to his needs      திறமைப்படி பெறு,தேவைப்பட்டி கொடு   5.They are able because they think they are able      உயர்வுக்கு கருதினால் உயர்த்திட முடியும்    6. People are always ready to admit a man's ability  after he gets there       முச்சடக்கிக்க் காட்டினால்தான் முனியென ஏற்பார்    7.Do what you can with that you have where you are     வல்லவனுக்கு ப்புல்லும் ஆயுதம் 

COOL SCIENCE FACTS 1.when glass breaks , the cracks move at a speed of 3000 miles per hour 2.Sometimes the sound of a human snore can be higher than a drilling machine 3.That our eyes automatically closed awhile sneezing  4.Human body becomes heat during  shivering  5.The human heart pumps 182 million litres  of blood during the average lifetime