Chemistry, asked by khyatiparmar8507, 2 days ago

An atom has electronic configuration 2,8,7,
(A) What is the atomic number of this element ?
(B) Which of the following element would it be chemically similar ?
( Atomic numbers are given in parentheses)
N(7) , F(9) , P(15) , Ar(18)

class 10
​

Answers

Answered by sarojdewal400
1

-So, the number of electrons present in an atom = 2+8+7 = 17. -Therefore the atomic number of the element is equal to 17. -The element having atomic number 17 is Chlorine. -The valence electrons in chlorine are 7.

Previous Question
Next Question
Similar questions
CBSE BOARD XII, 1 day ago
by selling 8dozen pencil, a shopkeeper gains the selling price of one dozen pencils .find his gain per cent.​
Social Sciences, 1 day ago
write the latitudinal and longitudinal extend of india​...
Math, 1 day ago
The sum of Rs. 5000, Rs. 8000, Rs. 13200 are due at the end of 3, 6 and 10 years respectively. If the rate of interest is 8% per annum effective, find the year at the end of which payment of Rs. 23995 may be made to settle all the dues.​
English, 2 days ago
antonym his mother swooped upwards ​...
Math, 2 days ago
The altitude of a right angled triangle having base 8 cm and that of area 24 cm² is a)6 cm b)4 cm c)2 cm d)5 cm​...
English, 8 months ago
Does the man acquaint him?​
English, 8 months ago
The name computer comes from the word........ ​
Physics, 8 months ago
Principle of conservation of momentum is deduced from * 1 point Newtons first law of motion Second law of motion Third law of motion First and second law of motion...