When potassium fluoride forms from a potassium(K) atom and a fluorine(F) atom a

ID: 1064014 • Letter: W

Question

When potassium fluoride forms from a potassium(K) atom and a fluorine(F) atom

a proton is transferred from the fluorine atom to the potassium atom.

an electron is transferred from the fluorine atom to the potassium atom.

an electron is transferred from the potassium atom to the fluorine atom.

a proton is transferred from the potassium atom to the fluorine atom.

What is the total number of electrons present in a O2- ion?

a proton is transferred from the fluorine atom to the potassium atom.

an electron is transferred from the fluorine atom to the potassium atom.

an electron is transferred from the potassium atom to the fluorine atom.

a proton is transferred from the potassium atom to the fluorine atom.

# When potassium fluoride forms from a potassium(K) atom and a fluorine(F) atom

Answer - C.) an electron is transferred from the potassium atom to the fluorine atom.

Explanation -

potassium have electron configuration 1s22s22p63s23p64s1 (2,8,8,1)

Fluorine have electron configuration 1s22s22p5 (2,7)

thus possium have 1 electron in outer shell by giving this electron potassium can occupy it complete octate and

Fluorine have 7 electron in outer shell by taking 1 electron electron Fluorine can occupy it complete octate

therefore an electron is transferred from the potassium atom to the fluorine atom and form K - F ionic bond.

# What is the total number of electrons present in a O2- ion

Answer - B.) 10

Explanation -

oxygen have electron configuration 1s22s22p4 after addtion of 2 electron it become 1s22s22p6 and have charge -2

thus O2- have total 10 electron.

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