Answer:
• The Na atom is formed when the Na+ ion gains an electron.
• A Na+ ion has 10 electrons and a Na atom has 11 electrons.
• A sodium atom has one more electron shell than a sodium ion.
• A Na+ ion is formed when a Na atom loses an electron
1 mol ------------- 6.02x10²³ atoms
1.14 moles ------ ( atoms )
atoms = 1.14 x ( 6.02x10²³) / 1
atoms = 6.86 x 10²³ / 1
= <span> 6.86 x 10²³ atoms
hope this helps!</span>
Answer:
Cấu hình điện tử của nguyên tố X là:
1s² 2s² 2p6 3s2 3p5
The electronic configuration of an element X is:
1s² 2s² 2p6 3s2 3p5
How many electrons does each element have to lose again to achieve a noble gas electron configuration?
Answer:
Explanation:
Each element will gain or lose electron to attain the octet of the noble gases in their outer shell electrons.
- Most metals in group 1 and 2 will lose 1 and 2 electrons apiece to attain a noble configuration.
- Non-metals are typically electronegative and will gain considerable amount of electrons to complete their octet.
- Halogens will need one electron to complete their own out shell configuration.
Elements will gain or lose an amount of electron that will make it resemble noble gases.
