Chemistry, asked by Answersneeded, 3 months ago

An element-X has mass number 40 and
contains 21 neutrons in its atom. To which
group of the periodic table does it belong?
(a) Group 1
(b) Group 4
(c) Group 2
(d) Group 3

Answers

Answered by laxmilas1310

2

Explanation:

X belongs to Group 1. The mass number of element X is 40 and the number of neutrons in its atom is 21.

Previous Question

Next Question

Similar questions

History, 1 month ago

please answer this question quickly...

Math, 1 month ago

express the hcf of 963 and 657 as a linear combination of them.

English, 1 month ago

each blank: 1. One of these pens mine. (Is/are) 2. Both the rooms white washed. (was/were) 3. Every one of the boys present. (was/were) 4.A few of the girls done their tasks.(has/have) 5. One of my friends in this factory.(work/works) 6. There books on the desk.(are/is) 7. Either of these two boys to blame. (was/were) 8. All of my friends joined this school. (has/have) 9 Misha and John sitting in...

Math, 3 months ago

find the number whose: 65% is 54...

India Languages, 3 months ago

खालील विषयावर बातमी तयार करा . मुंबई शहशन वायूप्रदूषण व ध्वनीप्रदूषणान मोठ्या प्रमाणात वाढ झाली आहे. सणासुदीला फटाक्यांचा जास्त प्रमाणात वापर. कचरा-अस्वच्छता यांमूळे नागरिक जस्त...

English, 10 months ago

why the authors says they can still be seen ....... to cape comorin from the lesson india and culture class 10.

Math, 10 months ago

if the product of two whole number is 1can we say that one or both o f them will be 1 justify trough example solution ...

Chemistry, 10 months ago

which of the following has maximum number of atoms (a) 18g of water (b) 16g of o2(c) 4.4g of co2 (d) 16g of ch4...