1. Consider a neutral atom that has 17 electrons
A.) how many protons does it have
b.) what is it's atomic number
c.)which element is it
2. List the following for an atom with 33 protons and 42 neutrons
a.) the name of the element
b.) the atomic number
C.)the number of electrons
d.) the mass number
These r my only questions please help im stuck! thanks :)
No problem! I'm here to help you. Let's break down each question step by step:
1. Consider a neutral atom that has 17 electrons.
a.) To find the number of protons in this atom, we need to remember that for a neutral atom, the number of protons is equal to the number of electrons. Therefore, this atom also has 17 protons.
b.) The atomic number of an element corresponds to the number of protons in its nucleus. In this case, since the number of protons is 17, the atomic number is also 17.
c.) To identify the element, we can use the periodic table. The element with atomic number 17 is chlorine (Cl).
2. For an atom with 33 protons and 42 neutrons:
a.) The name of the element can be determined by referring to the periodic table. In this case, the element with 33 protons is arsenic (As).
b.) The atomic number of an element corresponds to the number of protons. Therefore, the atomic number is 33.
c.) For a neutral atom, the number of electrons is equal to the number of protons. So, in this case, there are also 33 electrons.
d.) The mass number of an atom is the sum of the number of protons and neutrons. Thus, the mass number would be 33 (protons) + 42 (neutrons) = 75.
I hope this helps! Let me know if you have any further questions.