I think it is called a loess. Please correct me if I am wrong.
b. atomic number = 8; mass number = 17
c. atomic number = 7; mass number = 17
d. atomic number = 7; mass number = 15
c. Atomic number = 7; mass number = 17
The atomic number of the first isotope is 7.
Isotopes of the same element have the same atomic number, so the atomic number of the second isotope must also be 7.
Mass number = no. of protons + no. of neutrons, or
A = p + n
∴ A = 7 + 10 = 17
Options “a.” and “b.” have the wrong atomic numbers, and option “d.” has the wrong mass number.
Answer:
C
Explanation:
electronegative
valence
ejection
ionization
Answer:
Ionization energy
Explanation:
Think of it this way: ions are elements with positive or negative charge. If we remove an electron, we give the element a positive charge and it becomes a cation (positive ion). Ionization energy is the energy required to do so - the more electronegative the element, the closer it holds its electrons, the harder they are to remove and the more energy you need.