Periodic table
Mention all the sub-particles which are part of an atom
Electrons, Neutrons, Protons
What is the charge of an electron ?
negative charge
What kind of elements create ionic bonds ?
Ions
What is a Bohr model used for ?
Provide a graphical representation of atoms and show how connections are created between electrons.
Where will you find Metalloids in the periodic table ?
Along the zig zag line
How many valence electrons has Boron ?
3
What is the charge of an ionic compound ?
No charge
What kind of elements create metallic bonds ?
Metals
If Sodium has one valence electron and Magnesium has one more valence electron than Sodium, in which group will you find Magnesium ?
Group 2
How many electrons has the atom of calcium ?
20
What is the electrical charge of a molecule ?
No charge
How is an ionic bond created ?
A positive ion attracts a negative ion (or vice-versa)
In the periodic table, what do groups represent ?
Elements with the same number of valence electrons and similar chemical properties
Which elements will be more reactive few valence electrons ? or many valence electrons ?
Few valence electrons
What are properties of a metal ?
Ductile and malleable
How is a covalent bond created ?
Two non-metals share electrons to complete their outer energy ring/shell
In the periodic table, what do periods represent ?
Elements with the same amount of energy rings/shells
How many valence electrons do elements of the 18th group have ?
8
Which chemical bond creates molecules with low solubility in water ?
Covalent bond
What kind of elements create covalent bonds ?
Non-metals