Identity/Random
What is the number of protons in O, oxygen?
8
What is the mass of a proton?
1 amu
Where are the electrons?
Electron cloud
Which subatomic particle is neutrally charged?
Neutron
What is the mass of Magnesium (Mg) atom that has 12 neutrons?
24
A subatomic particle that is negative, outside the nucleus, and o amu is a?
Electron
Which of the following properties uniquely identifies every element?
Number of protons
What type of particles are found in the atom's nucleus?
Protons and neutrons
An atom has 3 protons, 4 neutrons, and 3 electrons. What is the charge of the atom’s nucleus?
+3
An atom has 25 protons, 30 neutrons and 25 electrons. What is the charge of the atom's nucleus?
+25
How many protons are in Sn, Tin?
50
Which subatomic particles contribute the most to the mass of an atom?
Protons and Neutrons
What is the charge of the nucleus?
Positive charge
How many particles are outside of the atom Hg, Mercury, with a mass of 200?
80
How many protons, electrons and neutrons are present in an atom of Zinc, Zn, with the mass of 65?
Protons 30, Electrons 30, and Neutrons 35
Fe, Iron
An atom has 82 protons and a mass of 207. It has __ neutrons
125
What is the charge of the electron cloud?
Negative charged
Which particle has a positive charge and has the same mass as an neutron?
Proton
An atom of a certain element has 11 electrons, and a mass number of 23. This element is very reactive in room temperature. How many neutrons are in this atom?
12
Mg
How many neutron, protons, and electron are in the atom potassium, K?
Neutron 20, Electron 19, Protons 19?
What is the charge of an atom?
Neutral
What is the total number of protons, neutrons and electrons in cadmium, Cd, atom that has a mass number of 112? Enter only a number, no words or letters.
160
What is the difference between the number of electrons in an atom of nihonium, Nh, and the number of electrons in an atom of Xenon, Xe?
59