Compare the reactivity of Halogens and Noble Gases.
Halogens are more reactive of the two.
What is the likely charge to be formed by the elements Lithium and Sodium?
1+
Which elements below will gain electrons?
Non-metals
What force keep ions together?
Electrostatic
In which group do we find the Halogens?
7/17
Compare the reactivity of Alkali and Alkaline Earth metals.
Alkali metals are the most reactive.
In which group do we find the noble gases?
8/18
The elements magnesium and calcium are both found in the same group? Which statement below is true?
They have the same amount of valency electrons.
What does the Lewis Dot structure show?
The symbol of the atom and the number of valence electrons.
In which group do we find alkaline earth element?
2
Which elements below will lose electrons?
Alkali metals and magnesium
Which statement below is true of the octet rule?
Main-group elements tend to bond in ways that provide them with eight valence electrons, achieving a stable, noble gas-like configuration. Atoms satisfy this rule by transferring or sharing electrons.
What are valency electrons?
Electrons in the outer shell of the atom.
which group do we find alkali metals?
1
How does the size of atoms change going down the group?
Increase in size
How are cations formed?
By the lost of an electron.
What is ionization energy?
Correct answer:
The energy needed to remove or add valency electrons.
