Explain why methane has a tetrahedral shape while ammonia has a trigonal pyramidal shape even though they both have the same number of electrons

:Ammonia has a Central N atom which is attached to 3 H atoms

:Methane has a central c atom with 4 H atoms attached to it .

idk

explanation:

dasdad

you need to take a look at the periodic system in order to sort these elements into pairs that would most likely exhibit similar chemical properties. first, you need to find elements that are found in the same group (groups are vertical in the periodic system), and then to see whether they have the same valence number. if they meet these criteria, they will have similar properties.

the first pair: ne (neon) and kr (krypton), are noble gases found in group 8

the second pair: li (lithium) and k (potassium), found in group 1

the third pair: s (sulfur) and te (tellurium), found in group 6