14. Which of these symbols provide more information about the atom? Circle your answer, then explain. 28.09. 29 "Si, Si, or, Si.

how do I find out the valance electrons, number of neutrons, and protons on an element from the periodic table?

What type of light is used in a TV remote control?     What is the mass number of the radioactive isotope of potassium?   What is the chemical formula of palytoxin?     Name an acid found in acid rain.

Give detailed Solution with explanation needed..don't give Handwritten answer..don't use Ai for answering this

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Mendeleev left empty spaces in his periodic table for elements he suspected existed but had yet to be discovered. He left no spaces for the Noble gases that we now have in the modern periodic table.  Give at least two reasons on why this group was challenging to discover, based on what we now know about the atom including sub-atomic particles. Mendeleev had a group VIII but they are NOT the noble gases.

1.) An ion has a mass number of 65, 36 neutrons, and a charge of +1 . Identify the element symbol, and determine the number of protons and electrons in this ion.element symbol:number of protons:number of electrons: 2.) An atom or ion has 43 neutrons , 36 protons, and 36 electrons. Identify the element symbol, and determine the mass number and charge for this atom or ion.element symbol:mass number:charge: 3.) Give the systematic name of each covalent compound. Spelling counts.SF2: