Hey Amara, could you post what you need help with and someone from the community will be able to help.
Daniel Paul Super User541 StudyNotes.ie
StudyNotes.ie - An online community of second level students & teachers.
I initially created StudyNotes.ie when I was doing my leaving certificate to share my revision notes with my friends. Since then it has taken off to be a popular website among secondary school students and has been totally redesigned and rebuilt as an online community.
Do you have questions for Daniel Paul?
Log in to ask Daniel Paul questions publicly or anonymously.
- H – Hydrogen
- He – Helium
- Li – Lithium
- Be – Beryllium
- B – Boron
- C – Carbon
- N – Nitrogen
- O – Oxygen
- F – Fluorine
- Ne – Neon
- Na – Sodium
- Mg – Magnesium
- Al – Aluminium
- Si... (More)
– As you move to the right across a period of elements, electronegativity increases.
– As you move down a group, electronegativity decreases.
– As you move down a group, atomic radius increases.
– As you move... (More)
Main differences between Mendeleev’s Periodic Table and the modern periodic table:
- In the modern periodic table, the elements are arranged in order of increasing atomic number. (In Mendeleev’s table, they were arranged in order of increasing atomic weight).
- More... (More)