A)(1 point)

Question

An element has 17 protons, 19 neutrons, and 18 electrons.

Element identity is blank
. It has a charge of blank
making it an blank
. It has a mass number of blank
and an atomic number of blank

answer the blanks
.

Answer 1

Let's analyze the information given about the element:

1. The number of protons in an atom identifies the element. Since the element has 17 protons, its identity is Chlorine (Cl).

2. The number of electrons is 18, which means the element has one more electron than protons. Therefore, the charge can be calculated as follows:

   • Protons = +17 (positive charge)
   • Electrons = -18 (negative charge)
   • Total charge = +17 - 18 = -1 This means the element has a charge of -1, making it an anion (since it has more electrons than protons).

3. The mass number is calculated by adding the number of protons and neutrons together:

   • Mass number = Protons + Neutrons = 17 + 19 = 36.

4. The atomic number is simply the number of protons, which is 17.

Now, filling in the blanks:

Element identity is Chlorine (Cl). It has a charge of -1, making it an anion. It has a mass number of 36 and an atomic number of 17.