Question

Mr.Thomas is a chemistry teacher. He asked class 7th student to make groups of 4 Students and asked each student to find symbols of elements ,hidden in the the first name of of other 3 group masters.This activity helped students to learn symbol better.
Read the given passage and answer the following questions.

i) Write name of at least one element whose symbol is present in the following names
a) Ajit b) Rakhi c) Kishore

ii) Write electronic configuration and valency of any two elements found in the above question.

iii) What values do you associate with Mr. Thomas.

Please help me

Answer 1

Answer:

Explanation:

first is radium Ra -khi

second is radium in Ra-khi and potassium k in k-ishore

and their electronic configurations of radium is 2,8,18 ,32,18,8,2 as its atomic no. is 88 and its valency is 2 because it has 2 electron in the outermost shell

second potassium k its electronic configuration is 2,8,8,1 as its atomic no. is 19 and its valency is 1 as it has 1 electron in its outermost shell  i can say that from this we can associate periodic classification of elements as in a periodic table too elements are classified as periods and group

i will tell u a fact

that all elements in the first group that is in the first vertical line of the periodic table have valency 1 and in group 2 have valency 2

group one elements are called as alkali metals and group two elements are called as alkaline earth metals

PLEASE ONLY ONE REQUEST CAN U MARK ME AS THE BRAINLEST PLEASE