Question

1. A certain element has 6 protons in its atom. One atom of this element needs _____ electrons in order to have no net charge.

2. Gold has the symbol Au.Located this element on the periodic table above and then identify its atomic number. The atomic number for this element is ____.

3. If you added one more proton to an atom of gold, then what element would it become?

A- Silver (Ag)

B- Platinum (Pt)

C- Mercury (Hg)

4. An isotope of uranium (U) has 92 protons and 143 neutrons. The mass number of the isotope is ___. The correct symbol to represent this isotope is ___.

Answer 1

An atom neutral no ot proton decon present n that atom Here no et profon - 6 So no ceveun element has 6 protons in ih o/m this olement needl oJecons 0 One atom in order to have no net chare. >old har the ymbol and haa atomic no。79 An element loca o above Au Ỉnthebeziodt table g rlver) . The atomi no. Atomie number equal to number rotom The atormic number one proton add ed to gold then no proton equal to 8o .". Now, atomie number - 80 Then ths elementMerouy (Hg become plain um (A) since its atom

number io 78 The etemen yuat above the gold in pemodic table en (99) o, corre optionn (e) Mercury (H) silver 1q) An fcotope o uraniumC protons Moa numba (A)number t proton + (U) ha 92 ond 43 neuron neutoon bo Y uranium - 92 + 14 23s Symbol to repressn* this uranium Lotpe 235 So, The mass number et the isotope i 235 symbel to reproen iotope The corect 23S 52