Question

Please answer these chemistry questions quickly:

Which element has the largest atomic radius?
What is the charge of manganese when it contains 21 electrons?
Which element has the largest electronegativity: vanadium, Gallium, Selenium, Nickel?
Largest ionization energy: scandium, Arsenic, Colbalt, Zinc?
What is the mass number of an atom with 15 protons, 18 electrons, and 17 neutrons?
a. 1. Gallium, 2. -2, 3. Selenium, 4. Zinc, 5. 50
b. 1. Bromine, 2. -3, 3. Vanadium, 4. Arsenic, 5. 45
c. 1. Calcium, 2. +3, 3. Sulfur, 4. Cobalt, 5. 49
d. 1. Zinc, 2. +2, 3. Polonium, 4. Nitrogen, 5. 47

Answer 1

1. Rb (Rubidium) 2. +3 3. Selenium (Se) 4. Zinc (Zn) 5. 32 , The element with the largest atomic radius is Rb (Rubidium).

Step-by-step explanation:

1. The element with the largest atomic radius is Rb (Rubidium). Atomic radius generally decreases from left to right across a period and increases from top to bottom within a group on the periodic table. Rb is located at the bottom of Group 1 (alkali metals) and has the largest atomic radius among the given elements.
2. Manganese (Mn) can have various charges depending on the number of electrons it gains or loses. In the case where it contains 21 electrons, its charge would be +3. You can determine the charge of manganese by considering its electron configuration and the octet rule.
3. The element with the largest electronegativity is Selenium (Se). Electronegativity generally increases from left to right across a period and decreases from top to bottom within a group on the periodic table. Selenium has a higher electronegativity compared to vanadium, gallium, and nickel.
4. The element with the largest ionization energy is Zinc (Zn). Ionization energy generally increases from left to right across a period and decreases from top to bottom within a group on the periodic table. Zinc has a higher ionization energy compared to scandium, arsenic, and cobalt.
5. The mass number of the atom with 15 protons, 18 electrons, and 17 neutrons is 32. The mass number of an atom is the sum of the number of protons and the number of neutrons.