How much do you know about Chemistry

What is the electronegativity of He?

• 2,20

• 2,55

• -

• 1

What is the chemical symbol of sulfur?

• S

• Sc

• Se

• Ag

What's the electron configuration of Al?

• [Ne]3s(^2)3p(^3)

• [Ne]3s(^2)3p(^2)

• 3s(^2)3p(^1)

• [Ne]3s(^2)3p(^1)

How many types is distilled water normally divided into?

• 1

• 2

• 3

• 4

How many ways can we write the electron configuration of Cacbon?

• 1

• 2

• 3

• 4

What is electronegativity?

• It is the tendency for an atom of a given chemical element to attract shared electrons (or electron density) when forming a chemical bond.

• is the distribution of electrons of an atom or molecule (or other physical structure) in atomic or molecular orbitals.

• is the number of protons found in the nucleus of every atom of that element.

What's the atomic number of Natri?

• 9

• 10

• 11

• 12

What's HCLO3?

• Acid chloric

• Acid Flohydric

• Acid fluoroantimonic

• Hydro Flohydric

How do we write calcium in the chemical symbol?

• Cl

• Ca

• C

• Co

• Cu

How do we write hydrogen peroxide?

• HCLO4

• H2O2

• H2O4

• H2O3

• HCLO3