Front

What classification does silicon (Si) belong to on the periodic table?

Back

Metalloid

Front

How many valence electrons does Hydrogen (H) have?

Back

1 Valence electron

Front

What is the atomic number of the element with the symbol F?

Back

9

Front

How many protons are present in the element with the atomic number 7?

Back

7 protons

Front

Which elements belong to the same group: Carbon (C) and Lead (Pb) or Sodium (Na) and Chlorine (Cl)?

Back

Carbon (C) and Lead (Pb) belong to the same group.

Front

What is the significance of an element's atomic number?

Back

The atomic number represents the number of protons in the nucleus of an atom.

Front

What are the main categories of elements on the periodic table?

Back

Metals, Nonmetals, and Metalloids.

Front

What is the general trend of valence electrons across a period in the periodic table?

Back

Valence electrons increase from left to right across a period.

Front

What is the relationship between the number of protons and the atomic number?

Back

The atomic number is equal to the number of protons in an atom.

Front

What defines a metalloid?

Back

Metalloids have properties intermediate between metals and nonmetals.