Chemistry Sem 1 Performance Final Review

Front

What is the electron configuration of an oxygen atom?

Back

1s² 2s² 2p⁴

Front

What type of bond involves an equal sharing of electrons?

Back

Non Polar Covalent

Front

How many valence electrons are present in atoms of group 14?

Back

4

Front

Why are halogens considered highly reactive?

Back

They only need one more electron to achieve a full outer shell.

Front

What is the chemical formula for Phosphorus tribromide?

Back

PBr₃

Front

What is the significance of valence electrons in chemical bonding?

Back

Valence electrons determine how an atom can bond with others and its reactivity.

Front

What is the difference between polar and nonpolar covalent bonds?

Back

Polar covalent bonds involve unequal sharing of electrons, while nonpolar covalent bonds involve equal sharing.

Front

What is the octet rule in chemistry?

Back

Atoms tend to bond in such a way that they have eight electrons in their valence shell, achieving stability.

Front

What are the characteristics of ionic bonds?

Back

Ionic bonds form between metals and nonmetals through the transfer of electrons, resulting in charged ions.

Front

What is the role of electronegativity in bond formation?

Back

Electronegativity measures an atom's ability to attract and hold onto electrons, influencing bond type.