MP2: Three weeks test 1 regular CHEM 2024-2025

Front

What does the Periodic Law state about elements in the same group?

Back

Elements in the same group will have similar chemical and physical characteristics.

Front

Which element does not have two valence electrons: Be, Mg, Ca, or Al?

Back

Al does not have two valence electrons.

Front

How are periods organized in the periodic table?

Back

Periods are organized from left to right by their atomic number.

Front

How many valence electrons does the element represented by [Ne] 3s² 3p⁵ have?

Back

Seven valence electrons.

Front

List the following elements in order of increasing electronegativity: Na, Mg, P, Cl.

Back

Na → Mg → P → Cl.

Front

What is the significance of valence electrons in chemical bonding?

Back

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

Front

What is electronegativity?

Back

Electronegativity is the tendency of an atom to attract electrons in a chemical bond.

Front

How does atomic number relate to the arrangement of elements in the periodic table?

Back

The atomic number determines the position of an element in the periodic table, with elements arranged in order of increasing atomic number.

Front

What are groups in the periodic table?

Back

Groups are vertical columns in the periodic table that contain elements with similar properties.

Front

What is the general trend of electronegativity across a period?

Back

Electronegativity generally increases from left to right across a period.