the electronic configuration at an element *is 1s2 2s2 2p6 3s2 3p2 a-deruse the. atomic numbers of* b- to which group does * belongs c- given two properties of the group to which the element*belongs d- identity elements* by name e- write balanced equation to represented the reaction between elements* and hot concentration Noah

Answer 1

I have no idea what "deruse" means.
Count the number of electrons. The atomic number will be the same since an atom is neutral so protons must equation electrons.
The element must be Si. You can look up the properties and the reaction with NaOH. By the way that is NaOH and not NoaH. You would do well to proof your posts.