An atom can contain protons which have a positive charge (+) and elect

1.	An atom can contain protons which have a positive charge (+) and electrons which have a negative charge (-). When an electron and a proton pair up, they become neutral (0) and cancel the charge at. Now determine the net charge:(i) 6 protons and 6 electrons → (ii) 9 protons and 12 electrons → (iii) 4 protons and 8 electrons → (iv) 7 protons and 6 electrons →
Answer» (i) 6 protons and 6 electrons → (+6) + (-6) = 0 (ii) 9 protons and 12 electrons → (+9) + (-12) = 9 - 12 = -3 ⇒ 3 electrons (iii) 4 protons and 8 electrons → (+4) + (-8) = +4 – 8 = -4 ⇒ 4 electrons (iv) 7 protons and 6 electrons → (+7) + (-6) = +1 = 1 proton

An atom can contain protons which have a positive charge (+) and electrons which have a negative charge (-). When an electron and a proton pair up, they become neutral (0) and cancel the charge at. Now determine the net charge:(i) 6 protons and 6 electrons → (ii) 9 protons and 12 electrons → (iii) 4 protons and 8 electrons → (iv) 7 protons and 6 electrons →

Answer»

(i) 6 protons and 6 electrons → (+6) + (-6) = 0

(ii) 9 protons and 12 electrons → (+9) + (-12)

= 9 - 12 = -3 ⇒ 3 electrons

(iii) 4 protons and 8 electrons → (+4) + (-8) = +4 – 8 = -4 ⇒ 4 electrons

(iv) 7 protons and 6 electrons → (+7) + (-6) = +1 = 1 proton