Question

Which of the following options shows each element with its respective atomic number?

a) Aluminum (27), Copper (59), Scandium (45), and Arsenic (74)
b) Aluminum (13), Copper (29), Scandium (16), and Arsenic (33)
c) Aluminum (13), Copper (27), Scandium (16), and Arsenic (33)
d) Aluminum (27), Copper (63), Scandium (45), and Arsenic (74)

Answer 1

An element is identified on the periodic table by its atomic number, the number of protons in the nucleus, which appears above the chemical symbol, while the atomic mass is presented below the symbol.

Step-by-step explanation:

The question asks which of the following options shows each element with its respective atomic number. An atomic number is a fundamental characteristic of an element representing the number of protons in the nucleus of its atoms, and serves as a unique identifier for each element on the periodic table.

The atomic number is found above the chemical symbol with the atomic mass usually presented below the symbol. For example, for carbon (C), the atomic number is 6, which would be displayed above its symbol, while its atomic mass of 12.011 would appear below the symbol. Similarly, the atomic number and atomic mass of tin (Sn) would be shown as 50 (above the symbol) and 118.71 (below the symbol), respectively.