IF an unknown element has an atomic mass of 119 and a quantum number sequence of 5, 1, 0, +1/2 identify: Z= n= e= X= Name of element=

In the following questions identify the elements of the periodic table by their atomic numbers.Which atom has the 1s22s22p6 electron configuration? Which atom has the 5f76d07s2 electron configuration? Which atom has the 4f96s2 electron configuration?

Place the following elements in order of increasing size   Be, Se, C, O

Please don't provide handwriting solutions....

How many electrons in an atom can have each of the following sublevel designatión? n = 3,|| = 1,m|| = +1 42. How many electrons in an atom can have each of the following sublevel designation? n=3, 1=1, ml +1-

An unidentified element is known to have an electron configuration, [X] ns2, in its ground state. This element must be in the same family as radon (Rn) O rubidium (Rb) arsenic O radium (Ra) O lead

Complete the following sentence: 12C and 13C are uncharged atoms with the same ___ . atomic number mass number number of electrons 3 of these 4 responses are correct number of protons

The artificial element 114 (flervium) was created in in Russia in 1998. It has an atomic number of 114 and a lifetime of less than a minute. What is the electronic configuration of this element?_____To which group does it belong? Group 14 What two cations are expected for this element? +2 and +4

Which of the following describes the element Li. Choose all that apply. reacts vigorously with alkali metals to form salts forms a basic solution in water is very reactive as a metal is one of the group of the least reactive elements is found in nature only combined with other elements consists of diatomic molecules in elemental form

Specify the correct answer.  2