Answer:
Atoms with<u>2</u>or less electrons in the outermost level tend to lose electrons
An ionic bond is formed between lithium and bromine.
Answer:
105.8 g of Na would be required
Explanation:
Let's think the reaction:
2Na(s) + Cl₂(g) → 2NaCl (s)
1 mol of chlorine reacts with 2 moles of sodium
Then, 2.3 moles of Cl₂ would react with (2.3 .2) / 1 = 4.6 moles
Let's determine the mass of them.
4.6 mol . 23 g/mol = 105.8 g
Number of proton K=19
so, 42 - 19 =23
then the answer in 19 protons and 23 neutrons