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Subject: Chemistry, asked on 26/8/21

how does arsenic and the other following elements from grp15 have vacant d orbitals?
I understand the case of phosphorus but how about arsenic and the others? (I know about the case of nitrogen as well)

Subject: Chemistry, asked on 28/7/21

Experts answer q no 19 fast pls

Subject: Chemistry, asked on 28/7/21

Pls experts answer q no 16 fast...

Subject: Chemistry, asked on 28/7/21

Pls answer expert only..,.,.,

Subject: Chemistry, asked on 28/7/21

Pls answer fast experts this is the second time I'm asking ......

Subject: Chemistry, asked on 28/7/21

Pls answer fast experts this is the second time I'm asking

Subject: Chemistry, asked on 27/7/21

Pls answer this fast and i have also asked more questions I haven't received any answers from those also yet pls answer them fast

Subject: Chemistry, asked on 23/5/21

The atomic number of an element X is 17.
Predict
(a) Its valence electrons
(b) Nature of the element(acidic or basic)
(c) Name of the element
(d) Relative size with respect to other members of its group.
 

Subject: Chemistry, asked on 18/5/21

The atoms of an element with electronic configuration 2,8 are held by ________ forces of attraction

Subject: Chemistry, asked on 14/5/21

Is Valency and Ions are same thing?

Subject: Chemistry, asked on 5/5/21

Please answer the questions.

Subject: Chemistry, asked on 5/5/21

pls answer question 8.

Subject: Chemistry, asked on 3/5/21

Q. ) An element X (atomic number 17) reacts with an element Y (atomic number 20) to form a
divalent halide. Write the formula of the compound so formed. { with reference to the lesson : periodic classification of elements }

Subject: Chemistry, asked on 30/4/21

Who is Newlands?

Subject: Chemistry, asked on 25/4/21

Na, Mg and A1 are the element of the same period of Modern Periodic Table having one, two and three valence
electrons respectively. Which of these elements (i) has the largest atomic radius, (ii) is least reactive? Justify
your answer stating reason for each case.

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