I think the correct answer would be A. When a polonium atom with 84 protons, 124 neutrons, and 84 electrons undergoes alpha decay, a lead atom would be produced with 82 protons, 122 neutrons, and 84 electrons together with an alpha particle having two protons and two neutrons.
Answer:
0.5mol/L
Explanation:
First, let us calculate the number of mole NaOH = 23 + 16 + 1 = 40g/mol
Mass of NaOH from the question = 30g
Number of mole = Mass /Molar Mass
Number of mole = 30/40 = 0.75mol
Volume = 1.5L
Active mass = mole/Volume
Active mass = 0.75mol/1.5L
Active mass = 0.5mol/L
Hey Hadnbjrjdjdjdjjdjxjxnxnxnsne
Answer:
Explanation:
When the two atoms are in contact, potassium transfers its outer electron to chlorine which readily accepts it, resulting in both atoms achieving a state of eight outermost electrons. With this electron transfer, the ionic bond in KCl is formed.
Hope this helped!!!
The answers are:
1. B. Protons
2. B. Nuclide
3. D. Even
4. B.<span>Isotopes are two or more atoms with the same atomic number, but a different mass number.
Isotopes are basically identical elements with different numbers of neutrons. Ideally, the number of protons and neutrons should be the same, but there are instances where neutrons are greater, making the isotopes more unstable. The force that holds together the nucleus of atoms is know as the strong force, and it overcomes the repulsive forces between protons. </span>
