Question

16 multiple choice 1 point what is the atoms chemical symbol (dc)? li sc nb ca ar clear my selection

Explanation:

Step1: Recall atomic number concept

The atomic number of an element is equal to the number of protons. Here the number of protons \(p^{+}=20\).

Step2: Identify element by atomic number

The element with atomic number 20 is calcium, which has the chemical - symbol Ca.

Answer:

Ca