2. Atoms & Elements

Give the correct number of protons, neutrons and electrons for the following isotope:.

In which pair are the two species both isoelectronic and isotopic?

One isotope of a metallic element has a mass number of 65 and 35 neutrons in the nucleus. The cation that this atom forms has 28 electrons. What is the symbol of the cation?

Which of the following is the symbol for the ion with a +4 charge, 30 neutrons and 21 electrons?

Fill in the gaps for the following table.

A nitride ion has 7 protons, 8 neutrons, and 10 electrons. what is the overall charge on this ion?

When electrons are removed from the outermost shell of a calcium atom, the atom becomes?

An atom that gains or loses an electron has a net electric charge and is called a/n.

When an atom is charged, it is called an ion. How many electrons are in O^2-?

Atoms with the same number of protons but with different electrical charges are ____.

What is the atomic number of an anion that has 5 neutrons and 4 electrons

The mass number of Fe²⁺ is 56. How many neutrons are there in a single Fe²⁺ atom? 28 30 56 58

An atom that gains an electron and forms an ion with a charge becomes in size.

An ion with a positive electrical charge is considered to be _____.

An ion with six protons, seven neutrons, and a charge of 2+ has an atomic number of ________.

What charge would an ion that has 11 protons, 11 neutrons, and 10 electrons would have?

Which choice(s) contain(s) an isoelectronic pair in the ground state?

The ion(s) of an atom have significantly different mass(es) than the atom itself

What is the mass number of an ion with 109 electrons, 157 neutrons, and a +1 charge?

Which choice(s) contain(s) an isoelectronic pair in the ground state?

What charge would an ion that has 11 protons, 11 neutrons, and 10 electrons would have?

Is the number of protons the same in the atom and the ion in lithium

In ionic compounds, ________ lose their valence electrons to form positively charged ________.

A Se ion has a mass number of 77 and a charge of −2

Determine the number of protons (p) and electrons (e) in N³⁻.

What type of ion has lost an electron and, consequently, has a net positive charge?

Fill in the blanks to complete the table. Symbol Z A Number of p_x001E_ Number of e_x001D_ Number of n Charge Si 14 ____ ____ 14 14 ____ S2- ____ 32 ____ ____ ____ 2- Cu2+ ____ ____ ____ ____ 34 2+ ____ 15 ____ ____ 15 16 ____

Fill in the blanks to complete the table. Symbol Z A Number of p Number of e− Number of n Charge ______ 8 ______ ______ ______ 8 2- Ca2 + 20 ______ ______ ______ 20 ______ Mg2 + ______ 25 ______ ______ 13 2+ N3 - ______ 14 ______ 10 ______ ______