2. Atoms & Elements

Which of the following is the atomic number of gold (Au)?

Which element has 15 protons in its nucleus?

Which element on the periodic table has the symbol 'Ti'?

Which element on the periodic table has the largest atomic number?

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

Which of the following is the correct chemical symbol for the element boron?

Which of the following is the correct chemical symbol for phosphorus?

Which of the following element symbols represents the lightest noble gas?

Which of the following is the chemical symbol for sulfur?

Which of the following is the correct chemical symbol for fluorine?

As of 2024, how many elements are officially recognized on the periodic table?

What is the atomic number of the element with the symbol Ni (nickel)?

Which of the following elements is considered the first basic metal on the periodic table?

Which of the following is the chemical symbol for calcium?

Which element has the chemical symbol Ag?